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10122212020 = 2254112344161
BaseRepresentation
bin10010110110101010…
…01011001010110100
3222010102201122111111
421123111023022310
5131212241241040
64352230044404
7505560245134
oct113325131264
928112648444
1010122212020
1143247a7788
121b65aa9704
13c5410a18b
146c0496ac4
153e399ddea
hex25b54b2b4

10122212020 has 24 divisors (see below), whose sum is σ = 21775101768. Its totient is φ = 3950131200.

The previous prime is 10122212017. The next prime is 10122212033. The reversal of 10122212020 is 2021222101.

It is a happy number.

10122212020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 540934564 + 9581277456 = 23258^2 + 97884^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6171261 + ... + 6172900.

It is an arithmetic number, because the mean of its divisors is an integer number (907295907).

Almost surely, 210122212020 is an apocalyptic number.

10122212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10122212020 is an abundant number, since it is smaller than the sum of its proper divisors (11652889748).

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

10122212020 is a wasteful number, since it uses less digits than its factorization.

10122212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12344211 (or 12344209 counting only the distinct ones).

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

Adding to 10122212020 its reverse (2021222101), we get a palindrome (12143434121).

The spelling of 10122212020 in words is "ten billion, one hundred twenty-two million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 12344161 24688322 49376644 61720805 123441610 246883220 506110601 1012221202 2024442404 2530553005 5061106010 10122212020