312212311311121 has 16 divisors (see below), whose sum is σ = 353718034689600. Its totient is φ = 273541946787648.

The previous prime is 312212311311097. The next prime is 312212311311133. The reversal of 312212311311121 is 121113113212213.

It is not a de Polignac number, because 312212311311121 - 2¹⁹ = 312212310786833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312212311311191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7018192731 + ... + 7018237216.

It is an arithmetic number, because the mean of its divisors is an integer number (22107377168100).

Almost surely, 2^{312212311311121} is an apocalyptic number.

It is an amenable number.

312212311311121 is a deficient number, since it is larger than the sum of its proper divisors (41505723378479).

312212311311121 is a wasteful number, since it uses less digits than its factorization.

312212311311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14036430048.

The product of its digits is 432, while the sum is 25.

Adding to 312212311311121 its reverse (121113113212213), we get a palindrome (433325424523334).

The spelling of 312212311311121 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred eleven million, three hundred eleven thousand, one hundred twenty-one".