21112011110112 has 48 divisors (see below), whose sum is σ = 59682031410960. Its totient is φ = 6496003418112.

The previous prime is 21112011110087. The next prime is 21112011110171. The reversal of 21112011110112 is 21101111021112.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×21112011110112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112011110091 and 21112011110100.

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, 8458336537 + ... + 8458339032.

It is an arithmetic number, because the mean of its divisors is an integer number (1243375654395).

Almost surely, 2^{21112011110112} is an apocalyptic number.

It is an amenable number.

21112011110112 is an abundant number, since it is smaller than the sum of its proper divisors (38570020300848).

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

21112011110112 is a wasteful number, since it uses less digits than its factorization.

21112011110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16916675595 (or 16916675587 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 21112011110112 its reverse (21101111021112), we get a palindrome (42213122131224).

The spelling of 21112011110112 in words is "twenty-one trillion, one hundred twelve billion, eleven million, one hundred ten thousand, one hundred twelve".