123015313121200 has 30 divisors (see below), whose sum is σ = 295544289774644. Its totient is φ = 49206125248320.

The previous prime is 123015313121167. The next prime is 123015313121221. The reversal of 123015313121200 is 2121313510321.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153769141002 + ... + 153769141801.

Almost surely, 2^{123015313121200} is an apocalyptic number.

123015313121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123015313121200 is an abundant number, since it is smaller than the sum of its proper divisors (172528976653444).

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

123015313121200 is a wasteful number, since it uses less digits than its factorization.

123015313121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307538282821 (or 307538282810 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 123015313121200 its reverse (2121313510321), we get a palindrome (125136626631521).

The spelling of 123015313121200 in words is "one hundred twenty-three trillion, fifteen billion, three hundred thirteen million, one hundred twenty-one thousand, two hundred".