202002223221 has 32 divisors (see below), whose sum is σ = 321715660800. Its totient is φ = 124865861040.

The previous prime is 202002223201. The next prime is 202002223229. The reversal of 202002223221 is 122322200202.

202002223221 is a `hidden beast` number, since 20 + 200 + 2 + 223 + 221 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-202002223221 is a prime.

It is a super-2 number, since 2×202002223221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202002223194 and 202002223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002223229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4164895 + ... + 4213116.

It is an arithmetic number, because the mean of its divisors is an integer number (10053614400).

Almost surely, 2^202002223221 is an apocalyptic number.

It is an amenable number.

202002223221 is a deficient number, since it is larger than the sum of its proper divisors (119713437579).

202002223221 is a wasteful number, since it uses less digits than its factorization.

202002223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8378086 (or 8378080 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 202002223221 its reverse (122322200202), we get a palindrome (324324423423).

The spelling of 202002223221 in words is "two hundred two billion, two million, two hundred twenty-three thousand, two hundred twenty-one".