222222100222111 has 64 divisors (see below), whose sum is σ = 247532502597120. Its totient is φ = 197810347069440.

The previous prime is 222222100222013. The next prime is 222222100222207. The reversal of 222222100222111 is 111222001222222.

It is a cyclic number.

It is not a de Polignac number, because 222222100222111 - 2²³ = 222222091833503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222100222211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79280091436 + ... + 79280094238.

It is an arithmetic number, because the mean of its divisors is an integer number (3867695353080).

Almost surely, 2^{222222100222111} is an apocalyptic number.

222222100222111 is a deficient number, since it is larger than the sum of its proper divisors (25310402375009).

222222100222111 is a wasteful number, since it uses less digits than its factorization.

222222100222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376.

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

Adding to 222222100222111 its reverse (111222001222222), we get a palindrome (333444101444333).

The spelling of 222222100222111 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, one hundred eleven".