222017993388 has 96 divisors (see below), whose sum is σ = 612829264320. Its totient is φ = 69267778560.

The previous prime is 222017993363. The next prime is 222017993411. The reversal of 222017993388 is 883399710222.

222017993388 is a `hidden beast` number, since 2 + 2 + 2 + 0 + 179 + 93 + 388 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1731 + ... + 666362.

It is an arithmetic number, because the mean of its divisors is an integer number (6383638170).

Almost surely, 2^222017993388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222017993388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306414632160).

222017993388 is an abundant number, since it is smaller than the sum of its proper divisors (390811270932).

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

222017993388 is a wasteful number, since it uses less digits than its factorization.

222017993388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668304 (or 668296 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 222017993388 in words is "two hundred twenty-two billion, seventeen million, nine hundred ninety-three thousand, three hundred eighty-eight".