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2021002112020 = 22510922338910687
BaseRepresentation
bin11101011010001101000…
…111001110110000010100
321011012120010000200110211
4131122031013032300110
5231103003020041040
64144234025055204
7266004213340243
oct35321507166024
97135503020424
102021002112020
1170a114006461
12287825627504
1311876c7385a8
146db61cb295a
1537886be58ea
hex1d68d1cec14

2021002112020 has 96 divisors (see below), whose sum is σ = 4313711001600. Its totient is φ = 795268191744.

The previous prime is 2021002111991. The next prime is 2021002112033. The reversal of 2021002112020 is 202112001202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189103117 + ... + 189113803.

It is an arithmetic number, because the mean of its divisors is an integer number (44934489600).

Almost surely, 22021002112020 is an apocalyptic number.

2021002112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021002112020 is an abundant number, since it is smaller than the sum of its proper divisors (2292708889580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021002112020 is a wasteful number, since it uses less digits than its factorization.

2021002112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11417 (or 11415 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021002112020 its reverse (202112001202), we get a palindrome (2223114113222).

The spelling of 2021002112020 in words is "two trillion, twenty-one billion, two million, one hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 109 218 223 389 436 446 545 778 892 1090 1115 1556 1945 2180 2230 3890 4460 7780 10687 21374 24307 42401 42748 48614 53435 84802 86747 97228 106870 121535 169604 173494 212005 213740 243070 346988 424010 433735 486140 848020 867470 1164883 1734940 2329766 2383201 4157243 4659532 4766402 5824415 8314486 9455423 9532804 11648830 11916005 16628972 18910846 20786215 23297660 23832010 37821692 41572430 47277115 47664020 83144860 94554230 189108460 259768909 453139487 519537818 906278974 927065189 1039075636 1298844545 1812557948 1854130378 2265697435 2597689090 3708260756 4531394870 4635325945 5195378180 9062789740 9270651890 18541303780 101050105601 202100211202 404200422404 505250528005 1010501056010 2021002112020