111222222012122 has 16 divisors (see below), whose sum is σ = 179666996326440. Its totient is φ = 51333238950912.

The previous prime is 111222222012113. The next prime is 111222222012137. The reversal of 111222222012122 is 221210222222111.

It can be written as a sum of positive squares in 4 ways, for example, as 72685701899281 + 38536520112841 = 8525591^2 + 6207779^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11667458 + ... + 18936050.

Almost surely, 2^{111222222012122} is an apocalyptic number.

111222222012122 is a deficient number, since it is larger than the sum of its proper divisors (68444774314318).

111222222012122 is a wasteful number, since it uses less digits than its factorization.

111222222012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857137.

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

Adding to 111222222012122 its reverse (221210222222111), we get a palindrome (332432444234233).

The spelling of 111222222012122 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-two million, twelve thousand, one hundred twenty-two".