12251331155500 has 48 divisors (see below), whose sum is σ = 26778644500608. Its totient is φ = 4896551280000.

The previous prime is 12251331155491. The next prime is 12251331155507. The reversal of 12251331155500 is 555113315221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12251331155507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9336841 + ... + 10567840.

It is an arithmetic number, because the mean of its divisors is an integer number (557888427096).

Almost surely, 2^{12251331155500} is an apocalyptic number.

12251331155500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12251331155500 is an abundant number, since it is smaller than the sum of its proper divisors (14527313345108).

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

12251331155500 is a wasteful number, since it uses less digits than its factorization.

12251331155500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19905931 (or 19905919 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 12251331155500 in words is "twelve trillion, two hundred fifty-one billion, three hundred thirty-one million, one hundred fifty-five thousand, five hundred".