122321564 has 24 divisors (see below), whose sum is σ = 217028448. Its totient is φ = 60318720.

The previous prime is 122321543. The next prime is 122321581. The reversal of 122321564 is 465123221.

It is a happy number.

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, 138404 + ... + 139284.

It is an arithmetic number, because the mean of its divisors is an integer number (9042852).

Almost surely, 2^122321564 is an apocalyptic number.

It is an amenable number.

122321564 is a deficient number, since it is larger than the sum of its proper divisors (94706884).

122321564 is a wasteful number, since it uses less digits than its factorization.

122321564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1323 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 122321564 is about 11059.9079562174. The cubic root of 122321564 is about 496.4029363217.

Adding to 122321564 its reverse (465123221), we get a palindrome (587444785).

The spelling of 122321564 in words is "one hundred twenty-two million, three hundred twenty-one thousand, five hundred sixty-four".