222412290 has 128 divisors (see below), whose sum is σ = 596090880. Its totient is φ = 52876800.

The previous prime is 222412273. The next prime is 222412301. The reversal of 222412290 is 92214222.

It is a self number, because there is not a number n which added to its sum of digits gives 222412290.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 724317 + ... + 724623.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960).

Almost surely, 2^222412290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222412290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298045440).

222412290 is an abundant number, since it is smaller than the sum of its proper divisors (373678590).

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

222412290 is a wasteful number, since it uses less digits than its factorization.

222412290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 222412290 is about 14913.4935544962. The cubic root of 222412290 is about 605.8795031036.

It can be divided in two parts, 22241 and 2290, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 222412290 in words is "two hundred twenty-two million, four hundred twelve thousand, two hundred ninety".