12255102232521 has 32 divisors (see below), whose sum is σ = 17312638586880. Its totient is φ = 7689528158400.

The previous prime is 12255102232511. The next prime is 12255102232537. The reversal of 12255102232521 is 12523220155221.

It is a de Polignac number, because none of the positive numbers 2^k-12255102232521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12255102232511) 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 31 ways as a sum of consecutive naturals, for example, 9624826 + ... + 10823468.

It is an arithmetic number, because the mean of its divisors is an integer number (541019955840).

Almost surely, 2^{12255102232521} is an apocalyptic number.

It is an amenable number.

12255102232521 is a deficient number, since it is larger than the sum of its proper divisors (5057536354359).

12255102232521 is a wasteful number, since it uses less digits than its factorization.

12255102232521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199837.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 12255102232521 its reverse (12523220155221), we get a palindrome (24778322387742).

The spelling of 12255102232521 in words is "twelve trillion, two hundred fifty-five billion, one hundred two million, two hundred thirty-two thousand, five hundred twenty-one".