122216564 has 12 divisors (see below), whose sum is σ = 214034688. Its totient is φ = 61063800.

The previous prime is 122216561. The next prime is 122216579. The reversal of 122216564 is 465612221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122216561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502 + ... + 16269.

It is an arithmetic number, because the mean of its divisors is an integer number (17836224).

Almost surely, 2^122216564 is an apocalyptic number.

It is an amenable number.

122216564 is a deficient number, since it is larger than the sum of its proper divisors (91818124).

122216564 is a wasteful number, since it uses less digits than its factorization.

122216564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22246 (or 22244 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 122216564 is about 11055.1600621610. The cubic root of 122216564 is about 496.2608593579.

Adding to 122216564 its reverse (465612221), we get a palindrome (587828785).

The spelling of 122216564 in words is "one hundred twenty-two million, two hundred sixteen thousand, five hundred sixty-four".