93314217921 has 4 divisors (see below), whose sum is σ = 124418957232. Its totient is φ = 62209478612.

The previous prime is 93314217917. The next prime is 93314217947. The reversal of 93314217921 is 12971241339.

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 93314217921 - 2² = 93314217917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (93314217911) 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, 15552369651 + ... + 15552369656.

It is an arithmetic number, because the mean of its divisors is an integer number (31104739308).

Almost surely, 2^93314217921 is an apocalyptic number.

It is an amenable number.

93314217921 is a deficient number, since it is larger than the sum of its proper divisors (31104739311).

93314217921 is a wasteful number, since it uses less digits than its factorization.

93314217921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31104739310.

The product of its digits is 81648, while the sum is 42.

The spelling of 93314217921 in words is "ninety-three billion, three hundred fourteen million, two hundred seventeen thousand, nine hundred twenty-one".