123255523122215 has 16 divisors (see below), whose sum is σ = 161352900567936. Its totient is φ = 89640260589600.

The previous prime is 123255523122211. The next prime is 123255523122223. The reversal of 123255523122215 is 512221325552321.

It is not a de Polignac number, because 123255523122215 - 2² = 123255523122211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123255523122211) 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, 78210980 + ... + 79771350.

It is an arithmetic number, because the mean of its divisors is an integer number (10084556285496).

Almost surely, 2^{123255523122215} is an apocalyptic number.

123255523122215 is a deficient number, since it is larger than the sum of its proper divisors (38097377445721).

123255523122215 is a wasteful number, since it uses less digits than its factorization.

123255523122215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996590.

The product of its digits is 360000, while the sum is 41.

Adding to 123255523122215 its reverse (512221325552321), we get a palindrome (635476848674536).

The spelling of 123255523122215 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, five hundred twenty-three million, one hundred twenty-two thousand, two hundred fifteen".