972221203113 has 4 divisors (see below), whose sum is σ = 1296294937488. Its totient is φ = 648147468740.

The previous prime is 972221203087. The next prime is 972221203153. The reversal of 972221203113 is 311302122279.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311302122279 = 3 ⋅103767374093.

It is a cyclic number.

It is not a de Polignac number, because 972221203113 - 2⁵ = 972221203081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (972221203153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162036867183 + ... + 162036867188.

It is an arithmetic number, because the mean of its divisors is an integer number (324073734372).

Almost surely, 2^972221203113 is an apocalyptic number.

It is an amenable number.

972221203113 is a deficient number, since it is larger than the sum of its proper divisors (324073734375).

972221203113 is a wasteful number, since it uses less digits than its factorization.

972221203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324073734374.

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 972221203113 in words is "nine hundred seventy-two billion, two hundred twenty-one million, two hundred three thousand, one hundred thirteen".