791122210211221 has 16 divisors (see below), whose sum is σ = 905656910054400. Its totient is φ = 676967756883840.

The previous prime is 791122210211209. The next prime is 791122210211327. The reversal of 791122210211221 is 122112012221197.

791122210211221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 791122210211221 - 2¹⁹ = 791122209686933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791122210211821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28866661 + ... + 49148026.

It is an arithmetic number, because the mean of its divisors is an integer number (56603556878400).

Almost surely, 2^{791122210211221} is an apocalyptic number.

It is an amenable number.

791122210211221 is a deficient number, since it is larger than the sum of its proper divisors (114534699843179).

791122210211221 is a wasteful number, since it uses less digits than its factorization.

791122210211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78017124.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 791122210211221 in words is "seven hundred ninety-one trillion, one hundred twenty-two billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-one".