222122120 has 48 divisors (see below), whose sum is σ = 549351180. Its totient is φ = 80769920.

The previous prime is 222122081. The next prime is 222122149. The reversal of 222122120 is 21221222.

It can be written as a sum of positive squares in 2 ways, for example, as 210192004 + 11930116 = 14498^2 + 3454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222122095 and 222122104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18107 + ... + 27786.

Almost surely, 2^222122120 is an apocalyptic number.

222122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222122120 is an abundant number, since it is smaller than the sum of its proper divisors (327229060).

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

222122120 is a wasteful number, since it uses less digits than its factorization.

222122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45926 (or 45911 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 222122120 is about 14903.7619412013. The cubic root of 222122120 is about 605.6159017130.

Adding to 222122120 its reverse (21221222), we get a palindrome (243343342).

It can be divided in two parts, 2 and 22122120, that added together give a palindrome (22122122).

The spelling of 222122120 in words is "two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty".