20312021000012 has 24 divisors (see below), whose sum is σ = 41026260243360. Its totient is φ = 8618962233600.

The previous prime is 20312021000009. The next prime is 20312021000027. The reversal of 20312021000012 is 21000012021302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3591231437 + ... + 3591237092.

It is an arithmetic number, because the mean of its divisors is an integer number (1709427510140).

Almost surely, 2^{20312021000012} is an apocalyptic number.

It is an amenable number.

20312021000012 is an abundant number, since it is smaller than the sum of its proper divisors (20714239243348).

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

20312021000012 is a wasteful number, since it uses less digits than its factorization.

20312021000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182468641 (or 7182468639 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20312021000012 its reverse (21000012021302), we get a palindrome (41312033021314).

The spelling of 20312021000012 in words is "twenty trillion, three hundred twelve billion, twenty-one million, twelve", and thus it is an aban number.