312322223213212 has 12 divisors (see below), whose sum is σ = 546654878494480. Its totient is φ = 156135115071936.

The previous prime is 312322223213179. The next prime is 312322223213237. The reversal of 312322223213212 is 212312322223213.

It is a super-2 number, since 2×312322223213212² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6499106637 + ... + 6499154692.

Almost surely, 2^{312322223213212} is an apocalyptic number.

It is an amenable number.

312322223213212 is a deficient number, since it is larger than the sum of its proper divisors (234332655281268).

312322223213212 is a wasteful number, since it uses less digits than its factorization.

312322223213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998267340 (or 12998267338 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

Adding to 312322223213212 its reverse (212312322223213), we get a palindrome (524634545436425).

The spelling of 312322223213212 in words is "three hundred twelve trillion, three hundred twenty-two billion, two hundred twenty-three million, two hundred thirteen thousand, two hundred twelve".