222222202120111 has 16 divisors (see below), whose sum is σ = 222848100976000. Its totient is φ = 221597064390240.

The previous prime is 222222202120091. The next prime is 222222202120151. The reversal of 222222202120111 is 111021202222222.

It is a cyclic number.

It is not a de Polignac number, because 222222202120111 - 2²¹ = 222222200022959 is a prime.

It is a super-2 number, since 2×222222202120111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222202120151) 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, 8679524836 + ... + 8679550438.

It is an arithmetic number, because the mean of its divisors is an integer number (13928006311000).

Almost surely, 2^{222222202120111} is an apocalyptic number.

222222202120111 is a deficient number, since it is larger than the sum of its proper divisors (625898855889).

222222202120111 is a wasteful number, since it uses less digits than its factorization.

222222202120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39526.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222222202120111 its reverse (111021202222222), we get a palindrome (333243404342333).

The spelling of 222222202120111 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty thousand, one hundred eleven".