922221993 has 24 divisors (see below), whose sum is σ = 1560422880. Its totient is φ = 479075520.

The previous prime is 922221991. The next prime is 922221997. The reversal of 922221993 is 399122229.

It is not a de Polignac number, because 922221993 - 2¹ = 922221991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (922221991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283548 + ... + 286781.

It is an arithmetic number, because the mean of its divisors is an integer number (65017620).

Almost surely, 2^922221993 is an apocalyptic number.

It is an amenable number.

922221993 is a deficient number, since it is larger than the sum of its proper divisors (638200887).

922221993 is a wasteful number, since it uses less digits than its factorization.

922221993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570357 (or 570350 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 922221993 is about 30368.1081564196. The cubic root of 922221993 is about 973.3711987078.

The spelling of 922221993 in words is "nine hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-three".