12401564200521 has 8 divisors (see below), whose sum is σ = 16535445370080. Its totient is φ = 8267696248992.

The previous prime is 12401564200469. The next prime is 12401564200579. The reversal of 12401564200521 is 12500246510421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12401564200521 - 2³⁵ = 12367204462153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12401564205521) 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 7 ways as a sum of consecutive naturals, for example, 856155 + ... + 5053328.

It is an arithmetic number, because the mean of its divisors is an integer number (2066930671260).

Almost surely, 2^{12401564200521} is an apocalyptic number.

It is an amenable number.

12401564200521 is a deficient number, since it is larger than the sum of its proper divisors (4133881169559).

12401564200521 is an equidigital number, since it uses as much as digits as its factorization.

12401564200521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609015.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 12401564200521 in words is "twelve trillion, four hundred one billion, five hundred sixty-four million, two hundred thousand, five hundred twenty-one".