11111100122 has 16 divisors (see below), whose sum is σ = 17100902952. Its totient is φ = 5411239680.

The previous prime is 11111100089. The next prime is 11111100137. The reversal of 11111100122 is 22100111111.

It can be written as a sum of positive squares in 4 ways, for example, as 1300395721 + 9810704401 = 36061^2 + 99049^2 .

It is a super-2 number, since 2×11111100122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 59213 + ... + 160400.

Almost surely, 2^11111100122 is an apocalyptic number.

11111100122 is a deficient number, since it is larger than the sum of its proper divisors (5989802830).

11111100122 is a wasteful number, since it uses less digits than its factorization.

11111100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220273.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11111100122 its reverse (22100111111), we get a palindrome (33211211233).

The spelling of 11111100122 in words is "eleven billion, one hundred eleven million, one hundred thousand, one hundred twenty-two".