312113021222 has 16 divisors (see below), whose sum is σ = 479100897792. Its totient is φ = 152413384200.

The previous prime is 312113021219. The next prime is 312113021263. The reversal of 312113021222 is 222120311213.

It is a junction number, because it is equal to n+sod(n) for n = 312113021194 and 312113021203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816323 + ... + 1136049.

It is an arithmetic number, because the mean of its divisors is an integer number (29943806112).

Almost surely, 2^312113021222 is an apocalyptic number.

312113021222 is a deficient number, since it is larger than the sum of its proper divisors (166987876570).

312113021222 is a wasteful number, since it uses less digits than its factorization.

312113021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331123.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 312113021222 its reverse (222120311213), we get a palindrome (534233332435).

The spelling of 312113021222 in words is "three hundred twelve billion, one hundred thirteen million, twenty-one thousand, two hundred twenty-two".