20012112312 has 16 divisors (see below), whose sum is σ = 50030280840. Its totient is φ = 6670704096.

The previous prime is 20012112299. The next prime is 20012112347. The reversal of 20012112312 is 21321121002.

It is a junction number, because it is equal to n+sod(n) for n = 20012112291 and 20012112300.

It is a congruent number.

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, 416918983 + ... + 416919030.

Almost surely, 2^20012112312 is an apocalyptic number.

It is an amenable number.

20012112312 is an abundant number, since it is smaller than the sum of its proper divisors (30018168528).

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

20012112312 is a wasteful number, since it uses less digits than its factorization.

20012112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833838022 (or 833838018 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20012112312 its reverse (21321121002), we get a palindrome (41333233314).

The spelling of 20012112312 in words is "twenty billion, twelve million, one hundred twelve thousand, three hundred twelve".