20111112012 has 12 divisors (see below), whose sum is σ = 46925928056. Its totient is φ = 6703704000.

The previous prime is 20111111981. The next prime is 20111112023. The reversal of 20111112012 is 21021111102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1675926001 = 20111112012 / (2 + 0 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837962989 + ... + 837963012.

Almost surely, 2^20111112012 is an apocalyptic number.

It is an amenable number.

20111112012 is an abundant number, since it is smaller than the sum of its proper divisors (26814816044).

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

20111112012 is a wasteful number, since it uses less digits than its factorization.

20111112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675926008 (or 1675926006 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111112012 its reverse (21021111102), we get a palindrome (41132223114).

The spelling of 20111112012 in words is "twenty billion, one hundred eleven million, one hundred twelve thousand, twelve".