312333212130021 has 12 divisors (see below), whose sum is σ = 451516859415648. Its totient is φ = 208051886186664.

The previous prime is 312333212130001. The next prime is 312333212130053. The reversal of 312333212130021 is 120031212333213.

312333212130021 is a `hidden beast` number, since 3 + 1 + 2 + 3 + 332 + 1 + 2 + 1 + 300 + 21 = 666.

It is not a de Polignac number, because 312333212130021 - 2²¹ = 312333210032869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312333212130001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14187924495 + ... + 14187946508.

It is an arithmetic number, because the mean of its divisors is an integer number (37626404951304).

Almost surely, 2^{312333212130021} is an apocalyptic number.

It is an amenable number.

312333212130021 is a deficient number, since it is larger than the sum of its proper divisors (139183647285627).

312333212130021 is a wasteful number, since it uses less digits than its factorization.

312333212130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28375872232 (or 28375872229 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 312333212130021 its reverse (120031212333213), we get a palindrome (432364424463234).

The spelling of 312333212130021 in words is "three hundred twelve trillion, three hundred thirty-three billion, two hundred twelve million, one hundred thirty thousand, twenty-one".