801353221 has 4 divisors (see below), whose sum is σ = 801430092. Its totient is φ = 801276352.

The previous prime is 801353219. The next prime is 801353227. The reversal of 801353221 is 122353108.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 159744321 + 641608900 = 12639^2 + 25330^2 .

It is a cyclic number.

It is not a de Polignac number, because 801353221 - 2¹ = 801353219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801353227) 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, 19780 + ... + 44653.

It is an arithmetic number, because the mean of its divisors is an integer number (200357523).

Almost surely, 2^801353221 is an apocalyptic number.

It is an amenable number.

801353221 is a deficient number, since it is larger than the sum of its proper divisors (76871).

801353221 is a wasteful number, since it uses less digits than its factorization.

801353221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76870.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 801353221 is about 28308.1829335618. The cubic root of 801353221 is about 928.8408964943.

The spelling of 801353221 in words is "eight hundred one million, three hundred fifty-three thousand, two hundred twenty-one".