20121202312 has 128 divisors (see below), whose sum is σ = 43300656000. Its totient is φ = 8705802240.

The previous prime is 20121202303. The next prime is 20121202379. The reversal of 20121202312 is 21320212102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27227239 + ... + 27227977.

It is an arithmetic number, because the mean of its divisors is an integer number (338286375).

Almost surely, 2^20121202312 is an apocalyptic number.

It is an amenable number.

20121202312 is an abundant number, since it is smaller than the sum of its proper divisors (23179453688).

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

20121202312 is a wasteful number, since it uses less digits than its factorization.

20121202312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20121202312 its reverse (21320212102), we get a palindrome (41441414414).

The spelling of 20121202312 in words is "twenty billion, one hundred twenty-one million, two hundred two thousand, three hundred twelve".