222222202101 has 24 divisors (see below), whose sum is σ = 321625927896. Its totient is φ = 147853762560.

The previous prime is 222222202051. The next prime is 222222202187. The reversal of 222222202101 is 101202222222.

It can be written as a sum of positive squares in 4 ways, for example, as 47807385201 + 174414816900 = 218649^2 + 417630^2 .

It is not a de Polignac number, because 222222202101 - 2¹⁵ = 222222169333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222201101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13759491 + ... + 13775631.

It is an arithmetic number, because the mean of its divisors is an integer number (13401080329).

Almost surely, 2^222222202101 is an apocalyptic number.

It is an amenable number.

222222202101 is a deficient number, since it is larger than the sum of its proper divisors (99403725795).

222222202101 is a wasteful number, since it uses less digits than its factorization.

222222202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19093 (or 19090 counting only the distinct ones).

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

Adding to 222222202101 its reverse (101202222222), we get a palindrome (323424424323).

The spelling of 222222202101 in words is "two hundred twenty-two billion, two hundred twenty-two million, two hundred two thousand, one hundred one".