122215660 has 48 divisors (see below), whose sum is σ = 294267456. Its totient is φ = 41766912.

The previous prime is 122215603. The next prime is 122215661. The reversal of 122215660 is 66512221.

It is not an unprimeable number, because it can be changed into a prime (122215661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48184 + ... + 50656.

It is an arithmetic number, because the mean of its divisors is an integer number (6130572).

Almost surely, 2^122215660 is an apocalyptic number.

122215660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122215660 is an abundant number, since it is smaller than the sum of its proper divisors (172051796).

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

122215660 is a wasteful number, since it uses less digits than its factorization.

122215660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 122215660 is about 11055.1191762007. The cubic root of 122215660 is about 496.2596357897.

Adding to 122215660 its reverse (66512221), we get a palindrome (188727881).

The spelling of 122215660 in words is "one hundred twenty-two million, two hundred fifteen thousand, six hundred sixty".