20111012112 has 20 divisors (see below), whose sum is σ = 51953448080. Its totient is φ = 6703670688.

The previous prime is 20111012083. The next prime is 20111012123. The reversal of 20111012112 is 21121011102.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 209489662 + ... + 209489757.

It is an arithmetic number, because the mean of its divisors is an integer number (2597672404).

Almost surely, 2^20111012112 is an apocalyptic number.

It is an amenable number.

20111012112 is an abundant number, since it is smaller than the sum of its proper divisors (31842435968).

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

20111012112 is a wasteful number, since it uses less digits than its factorization.

20111012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418979430 (or 418979424 counting only the distinct ones).

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

Adding to 20111012112 its reverse (21121011102), we get a palindrome (41232023214).

The spelling of 20111012112 in words is "twenty billion, one hundred eleven million, twelve thousand, one hundred twelve".