312203004010021 has 16 divisors (see below), whose sum is σ = 330133763232000. Its totient is φ = 294422828341248.

The previous prime is 312203004009977. The next prime is 312203004010067. The reversal of 312203004010021 is 120010400302213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 312203004010021 - 2²⁹ = 312202467139109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312203004010091) 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, 7038405 + ... + 25960453.

It is an arithmetic number, because the mean of its divisors is an integer number (20633360202000).

Almost surely, 2^{312203004010021} is an apocalyptic number.

It is an amenable number.

312203004010021 is a deficient number, since it is larger than the sum of its proper divisors (17930759221979).

312203004010021 is a wasteful number, since it uses less digits than its factorization.

312203004010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18926028.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312203004010021 its reverse (120010400302213), we get a palindrome (432213404312234).

The spelling of 312203004010021 in words is "three hundred twelve trillion, two hundred three billion, four million, ten thousand, twenty-one".