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20020201200220 = 22513185557414971
BaseRepresentation
bin1001000110101010100001…
…11110110001101001011100
32121212220122020120210201111
410203111100332301221130
510111002333001401340
6110325053051551404
74134261151262224
oct443252076615134
977786566523644
1020020201200220
116419579719831
1222b4070a5b564
13b22b87576050
144d2da9159084
1524ab885e6aea
hex123550fb1a5c

20020201200220 has 48 divisors (see below), whose sum is σ = 45276808133088. Its totient is φ = 7392016638720.

The previous prime is 20020201200187. The next prime is 20020201200277. The reversal of 20020201200220 is 2200210202002.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 20020201200220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48037335 + ... + 48452305.

It is an arithmetic number, because the mean of its divisors is an integer number (943266836106).

Almost surely, 220020201200220 is an apocalyptic number.

20020201200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020201200220 is an abundant number, since it is smaller than the sum of its proper divisors (25256606932868).

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

20020201200220 is a wasteful number, since it uses less digits than its factorization.

20020201200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600550 (or 600548 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20020201200220 its reverse (2200210202002), we get a palindrome (22220411402222).

The spelling of 20020201200220 in words is "twenty trillion, twenty billion, two hundred one million, two hundred thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 185557 371114 414971 742228 829942 927785 1659884 1855570 2074855 2412241 3711140 4149710 4824482 5394623 8299420 9648964 10789246 12061205 21578492 24122410 26973115 48244820 53946230 107892460 77000773847 154001547694 308003095388 385003869235 770007738470 1001010060011 1540015476940 2002020120022 4004040240044 5005050300055 10010100600110 20020201200220