12125512123152 has 20 divisors (see below), whose sum is σ = 31324239651600. Its totient is φ = 4041837374368.

The previous prime is 12125512123117. The next prime is 12125512123163. The reversal of 12125512123152 is 25132121552121.

It is a happy number.

It is a super-2 number, since 2×12125512123152² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126307417902 + ... + 126307417997.

It is an arithmetic number, because the mean of its divisors is an integer number (1566211982580).

Almost surely, 2^{12125512123152} is an apocalyptic number.

12125512123152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12125512123152 is an abundant number, since it is smaller than the sum of its proper divisors (19198727528448).

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

12125512123152 is a wasteful number, since it uses less digits than its factorization.

12125512123152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252614835910 (or 252614835904 counting only the distinct ones).

The product of its digits is 12000, while the sum is 33.

Adding to 12125512123152 its reverse (25132121552121), we get a palindrome (37257633675273).

The spelling of 12125512123152 in words is "twelve trillion, one hundred twenty-five billion, five hundred twelve million, one hundred twenty-three thousand, one hundred fifty-two".