222091980 has 48 divisors (see below), whose sum is σ = 678392064. Its totient is φ = 53840320.

The previous prime is 222091963. The next prime is 222092011. The reversal of 222091980 is 89190222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167592 + ... + 168911.

It is an arithmetic number, because the mean of its divisors is an integer number (14133168).

Almost surely, 2^222091980 is an apocalyptic number.

222091980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222091980 is an abundant number, since it is smaller than the sum of its proper divisors (456300084).

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

222091980 is a wasteful number, since it uses less digits than its factorization.

222091980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336526 (or 336524 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 222091980 is about 14902.7507527973. The cubic root of 222091980 is about 605.5885082399.

The spelling of 222091980 in words is "two hundred twenty-two million, ninety-one thousand, nine hundred eighty".