222210180 has 72 divisors (see below), whose sum is σ = 697296600. Its totient is φ = 57211392.

The previous prime is 222210169. The next prime is 222210181. The reversal of 222210180 is 81012222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19660356 + 202549824 = 4434^2 + 14232^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222210181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16065 + ... + 26504.

It is an arithmetic number, because the mean of its divisors is an integer number (9684675).

Almost surely, 2^222210180 is an apocalyptic number.

222210180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222210180 is an abundant number, since it is smaller than the sum of its proper divisors (475086420).

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

222210180 is a wasteful number, since it uses less digits than its factorization.

222210180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42613 (or 42608 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 222210180 is about 14906.7159361142. The cubic root of 222210180 is about 605.6959229947.

The spelling of 222210180 in words is "two hundred twenty-two million, two hundred ten thousand, one hundred eighty".