312012022000 has 80 divisors (see below), whose sum is σ = 862222974912. Its totient is φ = 106975545600.

The previous prime is 312012021953. The next prime is 312012022019. The reversal of 312012022000 is 220210213.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11129287 + ... + 11157286.

Almost surely, 2^312012022000 is an apocalyptic number.

It is an amenable number.

312012022000 is an abundant number, since it is smaller than the sum of its proper divisors (550210952912).

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

312012022000 is a wasteful number, since it uses less digits than its factorization.

312012022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22286603 (or 22286587 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 312012022000 its reverse (220210213), we get a palindrome (312232232213).

The spelling of 312012022000 in words is "three hundred twelve billion, twelve million, twenty-two thousand".