222297974100 has 144 divisors (see below), whose sum is σ = 720103285440. Its totient is φ = 58826851200.

The previous prime is 222297974099. The next prime is 222297974131. The reversal of 222297974100 is 1479792222.

It is a happy number.

222297974100 is a `hidden beast` number, since 2 + 2 + 229 + 7 + 9 + 7 + 410 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39454 + ... + 667946.

It is an arithmetic number, because the mean of its divisors is an integer number (5000717260).

Almost surely, 2^222297974100 is an apocalyptic number.

222297974100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222297974100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360051642720).

222297974100 is an abundant number, since it is smaller than the sum of its proper divisors (497805311340).

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

222297974100 is a wasteful number, since it uses less digits than its factorization.

222297974100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628647 (or 628634 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 222297974100 in words is "two hundred twenty-two billion, two hundred ninety-seven million, nine hundred seventy-four thousand, one hundred".