801333898921 has 4 divisors (see below), whose sum is σ = 801335711232. Its totient is φ = 801332086612.

The previous prime is 801333898889. The next prime is 801333898957. The reversal of 801333898921 is 129898333108.

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.

It is a cyclic number.

It is not a de Polignac number, because 801333898921 - 2⁵ = 801333898889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801333898121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242100 + ... + 1288906.

It is an arithmetic number, because the mean of its divisors is an integer number (200333927808).

Almost surely, 2^801333898921 is an apocalyptic number.

It is an amenable number.

801333898921 is a deficient number, since it is larger than the sum of its proper divisors (1812311).

801333898921 is a wasteful number, since it uses less digits than its factorization.

801333898921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812310.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 801333898921 in words is "eight hundred one billion, three hundred thirty-three million, eight hundred ninety-eight thousand, nine hundred twenty-one".