122222100111 has 16 divisors (see below), whose sum is σ = 167414327904. Its totient is φ = 79256876544.

The previous prime is 122222100101. The next prime is 122222100113. The reversal of 122222100111 is 111001222221.

It is not a de Polignac number, because 122222100111 - 2²⁷ = 122087882383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222100113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245595 + ... + 552051.

It is an arithmetic number, because the mean of its divisors is an integer number (10463395494).

Almost surely, 2^122222100111 is an apocalyptic number.

122222100111 is a deficient number, since it is larger than the sum of its proper divisors (45192227793).

122222100111 is a wasteful number, since it uses less digits than its factorization.

122222100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310090.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122222100111 its reverse (111001222221), we get a palindrome (233223322332).

The spelling of 122222100111 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, one hundred eleven".