21100020012110 has 16 divisors (see below), whose sum is σ = 40901577254496. Its totient is φ = 7790776619808.

The previous prime is 21100020012103. The next prime is 21100020012161. The reversal of 21100020012110 is 1121002000112.

It is a super-2 number, since 2×21100020012110² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21100020012091 and 21100020012100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81153922994 + ... + 81153923253.

It is an arithmetic number, because the mean of its divisors is an integer number (2556348578406).

Almost surely, 2^{21100020012110} is an apocalyptic number.

21100020012110 is a deficient number, since it is larger than the sum of its proper divisors (19801557242386).

21100020012110 is a wasteful number, since it uses less digits than its factorization.

21100020012110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162307846267.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21100020012110 its reverse (1121002000112), we get a palindrome (22221022012222).

The spelling of 21100020012110 in words is "twenty-one trillion, one hundred billion, twenty million, twelve thousand, one hundred ten".