222111200222111 has 32 divisors (see below), whose sum is σ = 224992368319488. Its totient is φ = 219254299355520.

The previous prime is 222111200222081. The next prime is 222111200222141. The reversal of 222111200222111 is 111222002111222.

It is an interprime number because it is at equal distance from previous prime (222111200222081) and next prime (222111200222141).

It is a cyclic number.

It is not a de Polignac number, because 222111200222111 - 2³⁴ = 222094020352927 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 (222111200222141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28283607461 + ... + 28283615313.

It is an arithmetic number, because the mean of its divisors is an integer number (7031011509984).

Almost surely, 2^{222111200222111} is an apocalyptic number.

222111200222111 is a deficient number, since it is larger than the sum of its proper divisors (2881168097377).

222111200222111 is a wasteful number, since it uses less digits than its factorization.

222111200222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222111200222111 its reverse (111222002111222), we get a palindrome (333333202333333).

The spelling of 222111200222111 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred million, two hundred twenty-two thousand, one hundred eleven".