11111120122 has 4 divisors (see below), whose sum is σ = 16666680186. Its totient is φ = 5555560060.

The previous prime is 11111120081. The next prime is 11111120123. The reversal of 11111120122 is 22102111111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7219730961 + 3891389161 = 84969^2 + 62381^2 .

It is not an unprimeable number, because it can be changed into a prime (11111120123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777780029 + ... + 2777780032.

Almost surely, 2^11111120122 is an apocalyptic number.

11111120122 is a deficient number, since it is larger than the sum of its proper divisors (5555560064).

11111120122 is an equidigital number, since it uses as much as digits as its factorization.

11111120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555560063.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11111120122 its reverse (22102111111), we get a palindrome (33213231233).

The spelling of 11111120122 in words is "eleven billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-two".