222221180 has 24 divisors (see below), whose sum is σ = 471479568. Its totient is φ = 87971328.

The previous prime is 222221179. The next prime is 222221183. The reversal of 222221180 is 81122222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55334 + ... + 59213.

It is an arithmetic number, because the mean of its divisors is an integer number (19644982).

Almost surely, 2^222221180 is an apocalyptic number.

222221180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221180 is an abundant number, since it is smaller than the sum of its proper divisors (249258388).

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

222221180 is a wasteful number, since it uses less digits than its factorization.

222221180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114653 (or 114651 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 222221180 is about 14907.0848927616. The cubic root of 222221180 is about 605.7059173542.

The spelling of 222221180 in words is "two hundred twenty-two million, two hundred twenty-one thousand, one hundred eighty".