312202013021321 has 4 divisors (see below), whose sum is σ = 328633697917200. Its totient is φ = 295770328125444.

The previous prime is 312202013021293. The next prime is 312202013021333. The reversal of 312202013021321 is 123120310202213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312202013021321 - 2¹⁸ = 312202012759177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312202013021351) 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, 8215842447911 + ... + 8215842447948.

It is an arithmetic number, because the mean of its divisors is an integer number (82158424479300).

Almost surely, 2^{312202013021321} is an apocalyptic number.

It is an amenable number.

312202013021321 is a deficient number, since it is larger than the sum of its proper divisors (16431684895879).

312202013021321 is a wasteful number, since it uses less digits than its factorization.

312202013021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16431684895878.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 312202013021321 its reverse (123120310202213), we get a palindrome (435322323223534).

The spelling of 312202013021321 in words is "three hundred twelve trillion, two hundred two billion, thirteen million, twenty-one thousand, three hundred twenty-one".