312122221213 has 8 divisors (see below), whose sum is σ = 358417861920. Its totient is φ = 268813396080.

The previous prime is 312122221199. The next prime is 312122221277.

312122221213 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312122221213 - 2⁹ = 312122220701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122228213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746703670 + ... + 746704087.

It is an arithmetic number, because the mean of its divisors is an integer number (44802232740).

Almost surely, 2^312122221213 is an apocalyptic number.

It is an amenable number.

312122221213 is a deficient number, since it is larger than the sum of its proper divisors (46295640707).

312122221213 is a wasteful number, since it uses less digits than its factorization.

312122221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493407787.

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

Multiplying 312122221213 by its sum of digits (22), we get a palindrome (6866688866686).

It can be divided in two parts, 312122 and 221213, that added together give a palindrome (533335).

The spelling of 312122221213 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred thirteen".