312212032130421 has 8 divisors (see below), whose sum is σ = 462536343896960. Its totient is φ = 208141354753596.

The previous prime is 312212032130377. The next prime is 312212032130443. The reversal of 312212032130421 is 124031230212213.

312212032130421 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 1 + 20 + 3 + 213 + 0 + 421 = 666.

It is not a de Polignac number, because 312212032130421 - 2⁶ = 312212032130357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11563408597423 = 312212032130421 / (3 + 1 + 2 + 2 + 1 + 2 + 0 + 3 + 2 + 1 + 3 + 0 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212032130221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5781704298685 + ... + 5781704298738.

It is an arithmetic number, because the mean of its divisors is an integer number (57817042987120).

Almost surely, 2^{312212032130421} is an apocalyptic number.

It is an amenable number.

312212032130421 is a deficient number, since it is larger than the sum of its proper divisors (150324311766539).

312212032130421 is a wasteful number, since it uses less digits than its factorization.

312212032130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563408597432 (or 11563408597426 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 312212032130421 its reverse (124031230212213), we get a palindrome (436243262342634).

The spelling of 312212032130421 in words is "three hundred twelve trillion, two hundred twelve billion, thirty-two million, one hundred thirty thousand, four hundred twenty-one".