312222213020 has 24 divisors (see below), whose sum is σ = 656160800064. Its totient is φ = 124794760896.

The previous prime is 312222213013. The next prime is 312222213031. The reversal of 312222213020 is 20312222213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 312222212983 and 312222213001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5855567 + ... + 5908646.

It is an arithmetic number, because the mean of its divisors is an integer number (27340033336).

Almost surely, 2^312222213020 is an apocalyptic number.

It is an amenable number.

312222213020 is an abundant number, since it is smaller than the sum of its proper divisors (343938587044).

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

312222213020 is a wasteful number, since it uses less digits than its factorization.

312222213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11765549 (or 11765547 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 312222213020 its reverse (20312222213), we get a palindrome (332534435233).

The spelling of 312222213020 in words is "three hundred twelve billion, two hundred twenty-two million, two hundred thirteen thousand, twenty".