312212322032421 has 16 divisors (see below), whose sum is σ = 435077249342400. Its totient is φ = 198892456831488.

The previous prime is 312212322032407. The next prime is 312212322032431. The reversal of 312212322032421 is 124230223212213.

It is not a de Polignac number, because 312212322032421 - 2¹⁰ = 312212322031397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212322032431) 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, 18498173931 + ... + 18498190808.

It is an arithmetic number, because the mean of its divisors is an integer number (27192328083900).

Almost surely, 2^{312212322032421} is an apocalyptic number.

It is an amenable number.

312212322032421 is a deficient number, since it is larger than the sum of its proper divisors (122864927309979).

312212322032421 is a wasteful number, since it uses less digits than its factorization.

312212322032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36996364868.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 312212322032421 its reverse (124230223212213), we get a palindrome (436442545244634).

The spelling of 312212322032421 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred twenty-two million, thirty-two thousand, four hundred twenty-one".