312220022012 has 12 divisors (see below), whose sum is σ = 546406942200. Its totient is φ = 156103752816.

The previous prime is 312220022011. The next prime is 312220022021. The reversal of 312220022012 is 210220022213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220022011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451387 + ... + 1652562.

It is an arithmetic number, because the mean of its divisors is an integer number (45533911850).

Almost surely, 2^312220022012 is an apocalyptic number.

It is an amenable number.

312220022012 is a deficient number, since it is larger than the sum of its proper divisors (234186920188).

312220022012 is a wasteful number, since it uses less digits than its factorization.

312220022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129100 (or 3129098 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 312220022012 its reverse (210220022213), we get a palindrome (522440044225).

The spelling of 312220022012 in words is "three hundred twelve billion, two hundred twenty million, twenty-two thousand, twelve".