20102012112 has 80 divisors (see below), whose sum is σ = 63914103680. Its totient is φ = 5301628416.

The previous prime is 20102012089. The next prime is 20102012129. The reversal of 20102012112 is 21121020102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2296687 + ... + 2305422.

It is an arithmetic number, because the mean of its divisors is an integer number (798926296).

Almost surely, 2^20102012112 is an apocalyptic number.

It is an amenable number.

20102012112 is an abundant number, since it is smaller than the sum of its proper divisors (43812091568).

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

20102012112 is a wasteful number, since it uses less digits than its factorization.

20102012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602140 (or 4602134 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102012112 its reverse (21121020102), we get a palindrome (41223032214).

The spelling of 20102012112 in words is "twenty billion, one hundred two million, twelve thousand, one hundred twelve".