312213033213021 has 12 divisors (see below), whose sum is σ = 450974534776480. Its totient is φ = 208141951310280.

The previous prime is 312213033213019. The next prime is 312213033213041. The reversal of 312213033213021 is 120312330312213.

312213033213021 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 1 + 30 + 3 + 321 + 302 + 1 = 666.

It is not a de Polignac number, because 312213033213021 - 2¹ = 312213033213019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312213033213001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46482360 + ... + 52773438.

Almost surely, 2^{312213033213021} is an apocalyptic number.

It is an amenable number.

312213033213021 is a deficient number, since it is larger than the sum of its proper divisors (138761501563459).

312213033213021 is a wasteful number, since it uses less digits than its factorization.

312213033213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805296 (or 11805293 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 312213033213021 its reverse (120312330312213), we get a palindrome (432525363525234).

The spelling of 312213033213021 in words is "three hundred twelve trillion, two hundred thirteen billion, thirty-three million, two hundred thirteen thousand, twenty-one".