12125312400 has 60 divisors (see below), whose sum is σ = 38841421232. Its totient is φ = 3233416320.

The previous prime is 12125312399. The next prime is 12125312413. The reversal of 12125312400 is 421352121.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5051014 + ... + 5053413.

Almost surely, 2^12125312400 is an apocalyptic number.

12125312400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12125312400 is an abundant number, since it is smaller than the sum of its proper divisors (26716108832).

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

12125312400 is a wasteful number, since it uses less digits than its factorization.

12125312400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10104448 (or 10104437 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12125312400 its reverse (421352121), we get a palindrome (12546664521).

The spelling of 12125312400 in words is "twelve billion, one hundred twenty-five million, three hundred twelve thousand, four hundred".