202201002220221 has 6 divisors (see below), whose sum is σ = 292068114318110. Its totient is φ = 134800668146808.

The previous prime is 202201002220207. The next prime is 202201002220253. The reversal of 202201002220221 is 122022200102202.

202201002220221 is a `hidden beast` number, since 2 + 0 + 220 + 1 + 0 + 0 + 2 + 220 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 184644315615321 + 17556686604900 = 13588389^2 + 4190070^2 .

It is not a de Polignac number, because 202201002220221 - 2³¹ = 202198854736573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202201002220194 and 202201002220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201002220121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11233389012226 + ... + 11233389012243.

Almost surely, 2^{202201002220221} is an apocalyptic number.

It is an amenable number.

202201002220221 is a deficient number, since it is larger than the sum of its proper divisors (89867112097889).

202201002220221 is a wasteful number, since it uses less digits than its factorization.

202201002220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22466778024475 (or 22466778024472 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202201002220221 its reverse (122022200102202), we get a palindrome (324223202322423).

The spelling of 202201002220221 in words is "two hundred two trillion, two hundred one billion, two million, two hundred twenty thousand, two hundred twenty-one".