222222122201111 has 4 divisors (see below), whose sum is σ = 223350153278472. Its totient is φ = 221094091123752.

The previous prime is 222222122201083. The next prime is 222222122201129. The reversal of 222222122201111 is 111102221222222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222222122201111 - 2²² = 222222118006807 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 (222222122201411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564015538385 + ... + 564015538778.

It is an arithmetic number, because the mean of its divisors is an integer number (55837538319618).

Almost surely, 2^{222222122201111} is an apocalyptic number.

222222122201111 is a deficient number, since it is larger than the sum of its proper divisors (1128031077361).

222222122201111 is a wasteful number, since it uses less digits than its factorization.

222222122201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128031077360.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222222122201111 its reverse (111102221222222), we get a palindrome (333324343423333).

The spelling of 222222122201111 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred one thousand, one hundred eleven".