222100111122111 has 24 divisors (see below), whose sum is σ = 329527089980400. Its totient is φ = 144045154382976.

The previous prime is 222100111122067. The next prime is 222100111122139. The reversal of 222100111122111 is 111221111001222.

It is a happy number.

222100111122111 is a `hidden beast` number, since 222 + 100 + 1 + 111 + 221 + 11 = 666.

It is not a de Polignac number, because 222100111122111 - 2¹⁴ = 222100111105727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100111122181) 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, 43364086 + ... + 48214563.

It is an arithmetic number, because the mean of its divisors is an integer number (13730295415850).

Almost surely, 2^{222100111122111} is an apocalyptic number.

222100111122111 is a deficient number, since it is larger than the sum of its proper divisors (107426978858289).

222100111122111 is a wasteful number, since it uses less digits than its factorization.

222100111122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91585975 (or 91585972 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 222100111122111 its reverse (111221111001222), we get a palindrome (333321222123333).

It can be divided in two parts, 222100111 and 122111, that added together give a palindrome (222222222).

The spelling of 222100111122111 in words is "two hundred twenty-two trillion, one hundred billion, one hundred eleven million, one hundred twenty-two thousand, one hundred eleven".