12162757200721 has 16 divisors (see below), whose sum is σ = 12468262966848. Its totient is φ = 11860931016000.

The previous prime is 12162757200701. The next prime is 12162757200731. The reversal of 12162757200721 is 12700275726121.

It is a cyclic number.

It is not a de Polignac number, because 12162757200721 - 2⁵ = 12162757200689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12162757200701) 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, 49486291 + ... + 49731463.

It is an arithmetic number, because the mean of its divisors is an integer number (779266435428).

Almost surely, 2^{12162757200721} is an apocalyptic number.

It is an amenable number.

12162757200721 is a deficient number, since it is larger than the sum of its proper divisors (305505766127).

12162757200721 is a wasteful number, since it uses less digits than its factorization.

12162757200721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252672.

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 12162757200721 in words is "twelve trillion, one hundred sixty-two billion, seven hundred fifty-seven million, two hundred thousand, seven hundred twenty-one".