312221011230220 has 24 divisors (see below), whose sum is σ = 670912126459344. Its totient is φ = 121984022991936.

The previous prime is 312221011230179. The next prime is 312221011230257. The reversal of 312221011230220 is 22032110122213.

It is a junction number, because it is equal to n+sod(n) for n = 312221011230191 and 312221011230200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181523842879 + ... + 181523844598.

It is an arithmetic number, because the mean of its divisors is an integer number (27954671935806).

Almost surely, 2^{312221011230220} is an apocalyptic number.

It is an amenable number.

312221011230220 is an abundant number, since it is smaller than the sum of its proper divisors (358691115229124).

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

312221011230220 is a wasteful number, since it uses less digits than its factorization.

312221011230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363047687529 (or 363047687527 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 312221011230220 its reverse (22032110122213), we get a palindrome (334253121352433).

The spelling of 312221011230220 in words is "three hundred twelve trillion, two hundred twenty-one billion, eleven million, two hundred thirty thousand, two hundred twenty".