222120221994 has 72 divisors (see below), whose sum is σ = 541291086336. Its totient is φ = 65743801200.

The previous prime is 222120221977. The next prime is 222120222013. The reversal of 222120221994 is 499122021222.

222120221994 is a `hidden beast` number, since 222 + 120 + 221 + 9 + 94 = 666.

222120221994 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1092202 + ... + 1279509.

Almost surely, 2^222120221994 is an apocalyptic number.

222120221994 is an abundant number, since it is smaller than the sum of its proper divisors (319170864342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222120221994 is a wasteful number, since it uses less digits than its factorization.

222120221994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371784 (or 2371770 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 222120221994 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, nine hundred ninety-four".