122215775 has 12 divisors (see below), whose sum is σ = 165324984. Its totient is φ = 88884000.

The previous prime is 122215763. The next prime is 122215781. The reversal of 122215775 is 577512221.

It is not a de Polignac number, because 122215775 - 2²⁴ = 105438559 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 221936 + ... + 222485.

It is an arithmetic number, because the mean of its divisors is an integer number (13777082).

Almost surely, 2^122215775 is an apocalyptic number.

122215775 is a deficient number, since it is larger than the sum of its proper divisors (43109209).

122215775 is a wasteful number, since it uses less digits than its factorization.

122215775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444442 (or 444437 counting only the distinct ones).

The product of its digits is 9800, while the sum is 32.

The square root of 122215775 is about 11055.1243774098. The cubic root of 122215775 is about 496.2597914431.

Adding to 122215775 its reverse (577512221), we get a palindrome (699727996).

The spelling of 122215775 in words is "one hundred twenty-two million, two hundred fifteen thousand, seven hundred seventy-five".