222999980 has 72 divisors (see below), whose sum is σ = 547249248. Its totient is φ = 76108032.

The previous prime is 222999923. The next prime is 222999989. The reversal of 222999980 is 89999222.

It is not an unprimeable number, because it can be changed into a prime (222999989) 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, 306377 + ... + 307103.

It is an arithmetic number, because the mean of its divisors is an integer number (7600684).

Almost surely, 2^222999980 is an apocalyptic number.

222999980 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 222999980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273624624).

222999980 is an abundant number, since it is smaller than the sum of its proper divisors (324249268).

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

222999980 is a wasteful number, since it uses less digits than its factorization.

222999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 222999980 is about 14933.1838534185. The cubic root of 222999980 is about 606.4126813218.

The spelling of 222999980 in words is "two hundred twenty-two million, nine hundred ninety-nine thousand, nine hundred eighty".