202220102210221 has 16 divisors (see below), whose sum is σ = 214921067914800. Its totient is φ = 189608863933440.

The previous prime is 202220102210213. The next prime is 202220102210279. The reversal of 202220102210221 is 122012201022202.

It can be written as a sum of positive squares in 8 ways, for example, as 19272539002500 + 182947563207721 = 4390050^2 + 13525811^2 .

It is not a de Polignac number, because 202220102210221 - 2³ = 202220102210213 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 (202220102210281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27727255 + ... + 34252603.

It is an arithmetic number, because the mean of its divisors is an integer number (13432566744675).

Almost surely, 2^{202220102210221} is an apocalyptic number.

It is an amenable number.

202220102210221 is a deficient number, since it is larger than the sum of its proper divisors (12700965704579).

202220102210221 is a wasteful number, since it uses less digits than its factorization.

202220102210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532224.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202220102210221 its reverse (122012201022202), we get a palindrome (324232303232423).

The spelling of 202220102210221 in words is "two hundred two trillion, two hundred twenty billion, one hundred two million, two hundred ten thousand, two hundred twenty-one".