312212444212213 has 4 divisors (see below), whose sum is σ = 312280896846508. Its totient is φ = 312143991577920.

The previous prime is 312212444212181. The next prime is 312212444212217.

It is a happy number.

312212444212213 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199963864976164 + 112248579236049 = 14140858^2 + 10594743^2 .

It is a cyclic number.

It is not a de Polignac number, because 312212444212213 - 2⁵ = 312212444212181 is a prime.

It is a super-2 number, since 2×312212444212213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212444212217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34226310306 + ... + 34226319427.

It is an arithmetic number, because the mean of its divisors is an integer number (78070224211627).

Almost surely, 2^{312212444212213} is an apocalyptic number.

It is an amenable number.

312212444212213 is a deficient number, since it is larger than the sum of its proper divisors (68452634295).

312212444212213 is an equidigital number, since it uses as much as digits as its factorization.

312212444212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68452634294.

The product of its digits is 36864, while the sum is 34.

The spelling of 312212444212213 in words is "three hundred twelve trillion, two hundred twelve billion, four hundred forty-four million, two hundred twelve thousand, two hundred thirteen".