222200122122111 has 48 divisors (see below), whose sum is σ = 355068004368096. Its totient is φ = 123150119710464.

The previous prime is 222200122122109. The next prime is 222200122122119. The reversal of 222200122122111 is 111221221002222.

It is not a de Polignac number, because 222200122122111 - 2¹ = 222200122122109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222200122122119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62712936 + ... + 66161261.

It is an arithmetic number, because the mean of its divisors is an integer number (7397250091002).

Almost surely, 2^{222200122122111} is an apocalyptic number.

222200122122111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222200122122111 is a deficient number, since it is larger than the sum of its proper divisors (132867882245985).

222200122122111 is a wasteful number, since it uses less digits than its factorization.

222200122122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128874568 (or 128874561 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222200122122111 its reverse (111221221002222), we get a palindrome (333421343124333).

The spelling of 222200122122111 in words is "two hundred twenty-two trillion, two hundred billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".