312221120233 has 12 divisors (see below), whose sum is σ = 361819005552. Its totient is φ = 267141062720.

The previous prime is 312221120221. The next prime is 312221120261. The reversal of 312221120233 is 332021122213.

It is not a de Polignac number, because 312221120233 - 2¹⁷ = 312220989161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312221120033) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 49103635 + ... + 49109992.

It is an arithmetic number, because the mean of its divisors is an integer number (30151583796).

Almost surely, 2^312221120233 is an apocalyptic number.

It is an amenable number.

312221120233 is a deficient number, since it is larger than the sum of its proper divisors (49597885319).

312221120233 is a wasteful number, since it uses less digits than its factorization.

312221120233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98213672 (or 98213655 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312221120233 its reverse (332021122213), we get a palindrome (644242242446).

The spelling of 312221120233 in words is "three hundred twelve billion, two hundred twenty-one million, one hundred twenty thousand, two hundred thirty-three".