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21100020010 = 2573227127331
BaseRepresentation
bin10011101001101010…
…001100000100101010
32000110111102002000121
4103221222030010222
5321203101120020
613405422353454
71344610132216
oct235152140452
960414362017
1021100020010
118a48458373
12410a42b88a
131cb3564754
14104242b946
15837607baa
hex4e9a8c12a

21100020010 has 32 divisors (see below), whose sum is σ = 38670219072. Its totient is φ = 8287655040.

The previous prime is 21100020001. The next prime is 21100020023. The reversal of 21100020010 is 1002000112.

Adding to 21100020010 its reverse (1002000112), we get a palindrome (22102020122).

It is a junction number, because it is equal to n+sod(n) for n = 21100019975 and 21100020002.

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, 102045 + ... + 229375.

It is an arithmetic number, because the mean of its divisors is an integer number (1208444346).

Almost surely, 221100020010 is an apocalyptic number.

21100020010 is a deficient number, since it is larger than the sum of its proper divisors (17570199062).

21100020010 is a wasteful number, since it uses less digits than its factorization.

21100020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127638.

The product of its (nonzero) digits is 4, while the sum is 7.

The spelling of 21100020010 in words is "twenty-one billion, one hundred million, twenty thousand, ten".

Divisors: 1 2 5 10 73 146 227 365 454 730 1135 2270 16571 33142 82855 127331 165710 254662 636655 1273310 9295163 18590326 28904137 46475815 57808274 92951630 144520685 289041370 2110002001 4220004002 10550010005 21100020010