222997900 has 36 divisors (see below), whose sum is σ = 488718720. Its totient is φ = 88312000.

The previous prime is 222997837. The next prime is 222997979. The reversal of 222997900 is 9799222.

222997900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 940 + ... + 21139.

It is an arithmetic number, because the mean of its divisors is an integer number (13575520).

Almost surely, 2^222997900 is an apocalyptic number.

222997900 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 222997900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244359360).

222997900 is an abundant number, since it is smaller than the sum of its proper divisors (265720820).

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

222997900 is a wasteful number, since it uses less digits than its factorization.

222997900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22194 (or 22187 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 222997900 is about 14933.1142097019. The cubic root of 222997900 is about 606.4107959071.

The spelling of 222997900 in words is "two hundred twenty-two million, nine hundred ninety-seven thousand, nine hundred".