222312120 has 32 divisors (see below), whose sum is σ = 666936720. Its totient is φ = 59283200.

The previous prime is 222312071. The next prime is 222312151. The reversal of 222312120 is 21213222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222312120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926181 + ... + 926420.

Almost surely, 2^222312120 is an apocalyptic number.

222312120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222312120 is an abundant number, since it is smaller than the sum of its proper divisors (444624600).

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

222312120 is a wasteful number, since it uses less digits than its factorization.

222312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852615 (or 1852611 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222312120 is about 14910.1348082437. The cubic root of 222312120 is about 605.7885308175.

Adding to 222312120 its reverse (21213222), we get a palindrome (243525342).

The spelling of 222312120 in words is "two hundred twenty-two million, three hundred twelve thousand, one hundred twenty".