202222211121 has 16 divisors (see below), whose sum is σ = 342386812800. Its totient is φ = 115555549104.

The previous prime is 202222211099. The next prime is 202222211137. The reversal of 202222211121 is 121112222202.

It is a happy number.

It is not a de Polignac number, because 202222211121 - 2¹⁰ = 202222210097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202222211094 and 202222211103.

It is not an unprimeable number, because it can be changed into a prime (202222211141) 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, 534979206 + ... + 534979583.

It is an arithmetic number, because the mean of its divisors is an integer number (21399175800).

Almost surely, 2^202222211121 is an apocalyptic number.

202222211121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202222211121 is a deficient number, since it is larger than the sum of its proper divisors (140164601679).

202222211121 is a wasteful number, since it uses less digits than its factorization.

202222211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069958805 (or 1069958799 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202222211121 its reverse (121112222202), we get a palindrome (323334433323).

The spelling of 202222211121 in words is "two hundred two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".