312142212020421 has 32 divisors (see below), whose sum is σ = 507935458176000. Its totient is φ = 188571038833584.

The previous prime is 312142212020407. The next prime is 312142212020437. The reversal of 312142212020421 is 124020212241213.

312142212020421 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 4 + 2 + 212 + 0 + 20 + 421 = 666.

It is not a de Polignac number, because 312142212020421 - 2¹⁸ = 312142211758277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312142212020521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13227474091 + ... + 13227497688.

It is an arithmetic number, because the mean of its divisors is an integer number (15872983068000).

Almost surely, 2^{312142212020421} is an apocalyptic number.

It is an amenable number.

312142212020421 is a deficient number, since it is larger than the sum of its proper divisors (195793246155579).

312142212020421 is a wasteful number, since it uses less digits than its factorization.

312142212020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26454971830 (or 26454971824 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 312142212020421 its reverse (124020212241213), we get a palindrome (436162424261634).

The spelling of 312142212020421 in words is "three hundred twelve trillion, one hundred forty-two billion, two hundred twelve million, twenty thousand, four hundred twenty-one".