312066465221 has 16 divisors (see below), whose sum is σ = 360160819200. Its totient is φ = 264851203248.

The previous prime is 312066465173. The next prime is 312066465229. The reversal of 312066465221 is 122564660213.

It is a cyclic number.

It is not a de Polignac number, because 312066465221 - 2⁶ = 312066465157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312066465229) 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, 5870600 + ... + 5923518.

It is an arithmetic number, because the mean of its divisors is an integer number (22510051200).

Almost surely, 2^312066465221 is an apocalyptic number.

It is an amenable number.

312066465221 is a deficient number, since it is larger than the sum of its proper divisors (48094353979).

312066465221 is a wasteful number, since it uses less digits than its factorization.

312066465221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61208.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 312066465221 in words is "three hundred twelve billion, sixty-six million, four hundred sixty-five thousand, two hundred twenty-one".