21110100111112 has 32 divisors (see below), whose sum is σ = 40344000840000. Its totient is φ = 10352514921408.

The previous prime is 21110100111097. The next prime is 21110100111127. The reversal of 21110100111112 is 21111100101112.

It is an interprime number because it is at equal distance from previous prime (21110100111097) and next prime (21110100111127).

It is a junction number, because it is equal to n+sod(n) for n = 21110100111092 and 21110100111101.

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, 50732187 + ... + 51146602.

It is an arithmetic number, because the mean of its divisors is an integer number (1260750026250).

Almost surely, 2^{21110100111112} is an apocalyptic number.

It is an amenable number.

21110100111112 is a deficient number, since it is larger than the sum of its proper divisors (19233900728888).

21110100111112 is a wasteful number, since it uses less digits than its factorization.

21110100111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101879293 (or 101879289 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 21110100111112 its reverse (21111100101112), we get a palindrome (42221200212224).

The spelling of 21110100111112 in words is "twenty-one trillion, one hundred ten billion, one hundred million, one hundred eleven thousand, one hundred twelve".