202222222221 has 16 divisors (see below), whose sum is σ = 278973186048. Its totient is φ = 130163218800.

The previous prime is 202222222201. The next prime is 202222222273. The reversal of 202222222221 is 122222222202.

It is not a de Polignac number, because 202222222221 - 2¹⁹ = 202221697933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202222222201) 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, 2482461 + ... + 2562626.

It is an arithmetic number, because the mean of its divisors is an integer number (17435824128).

Almost surely, 2^202222222221 is an apocalyptic number.

It is an amenable number.

202222222221 is a deficient number, since it is larger than the sum of its proper divisors (76750963827).

202222222221 is a wasteful number, since it uses less digits than its factorization.

202222222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045552.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 202222222221 its reverse (122222222202), we get a palindrome (324444444423).

The spelling of 202222222221 in words is "two hundred two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".