891072221012002 has 8 divisors (see below), whose sum is σ = 1415232351019116. Its totient is φ = 419328104005632.

The previous prime is 891072221011991. The next prime is 891072221012021. The reversal of 891072221012002 is 200210122270198.

It can be written as a sum of positive squares in 2 ways, for example, as 886521981681361 + 4550239330641 = 29774519^2 + 2133129^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13104003250143 + ... + 13104003250210.

Almost surely, 2^{891072221012002} is an apocalyptic number.

891072221012002 is a deficient number, since it is larger than the sum of its proper divisors (524160130007114).

891072221012002 is a wasteful number, since it uses less digits than its factorization.

891072221012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26208006500372.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 891072221012002 in words is "eight hundred ninety-one trillion, seventy-two billion, two hundred twenty-one million, twelve thousand, two".