202222012221 has 12 divisors (see below), whose sum is σ = 294934370848. Its totient is φ = 133505793864.

The previous prime is 202222012189. The next prime is 202222012231. The reversal of 202222012221 is 122210222202.

202222012221 is a `hidden beast` number, since 20 + 222 + 201 + 2 + 221 = 666.

It is not a de Polignac number, because 202222012221 - 2⁵ = 202222012189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202222012194 and 202222012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202222012231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109072435 + ... + 109074288.

Almost surely, 2^202222012221 is an apocalyptic number.

It is an amenable number.

202222012221 is a deficient number, since it is larger than the sum of its proper divisors (92712358627).

202222012221 is a wasteful number, since it uses less digits than its factorization.

202222012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218146832 (or 218146829 counting only the distinct ones).

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

Adding to 202222012221 its reverse (122210222202), we get a palindrome (324432234423).

The spelling of 202222012221 in words is "two hundred two billion, two hundred twenty-two million, twelve thousand, two hundred twenty-one".