315914016221 has 4 divisors (see below), whose sum is σ = 315936924000. Its totient is φ = 315891108444.

The previous prime is 315914016203. The next prime is 315914016307. The reversal of 315914016221 is 122610419513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315914016221 - 2¹⁸ = 315913754077 is a prime.

It is a super-2 number, since 2×315914016221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315914012221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11433191 + ... + 11460788.

It is an arithmetic number, because the mean of its divisors is an integer number (78984231000).

Almost surely, 2^315914016221 is an apocalyptic number.

It is an amenable number.

315914016221 is a deficient number, since it is larger than the sum of its proper divisors (22907779).

315914016221 is a wasteful number, since it uses less digits than its factorization.

315914016221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22907778.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 315914016221 in words is "three hundred fifteen billion, nine hundred fourteen million, sixteen thousand, two hundred twenty-one".