20112110211312 has 120 divisors (see below), whose sum is σ = 66401887784960. Its totient is φ = 5560952123520.

The previous prime is 20112110211311. The next prime is 20112110211313. The reversal of 20112110211312 is 21311201121102.

It is a happy number.

20112110211312 is a `hidden beast` number, since 20 + 1 + 12 + 110 + 211 + 312 = 666.

It is an interprime number because it is at equal distance from previous prime (20112110211311) and next prime (20112110211313).

It is a super-2 number, since 2×20112110211312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112110211311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321783112 + ... + 321845607.

Almost surely, 2^{20112110211312} is an apocalyptic number.

It is an amenable number.

20112110211312 is an abundant number, since it is smaller than the sum of its proper divisors (46289777573648).

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

20112110211312 is a wasteful number, since it uses less digits than its factorization.

20112110211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643628771 (or 643628762 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 20112110211312 its reverse (21311201121102), we get a palindrome (41423311332414).

The spelling of 20112110211312 in words is "twenty trillion, one hundred twelve billion, one hundred ten million, two hundred eleven thousand, three hundred twelve".