222109164 has 72 divisors (see below), whose sum is σ = 594725040. Its totient is φ = 69697152.

The previous prime is 222109159. The next prime is 222109189. The reversal of 222109164 is 461901222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117394 + ... + 119270.

It is an arithmetic number, because the mean of its divisors is an integer number (8260070).

Almost surely, 2^222109164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222109164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297362520).

222109164 is an abundant number, since it is smaller than the sum of its proper divisors (372615876).

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

222109164 is a wasteful number, since it uses less digits than its factorization.

222109164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079 (or 2074 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 222109164 is about 14903.3272795037. The cubic root of 222109164 is about 605.6041266405.

The spelling of 222109164 in words is "two hundred twenty-two million, one hundred nine thousand, one hundred sixty-four".