11111102122 has 4 divisors (see below), whose sum is σ = 16666653186. Its totient is φ = 5555551060.

The previous prime is 11111102071. The next prime is 11111102141. The reversal of 11111102122 is 22120111111.

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., 10874526961 + 236575161 = 104281^2 + 15381^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777775529 + ... + 2777775532.

Almost surely, 2^11111102122 is an apocalyptic number.

11111102122 is a deficient number, since it is larger than the sum of its proper divisors (5555551064).

11111102122 is an equidigital number, since it uses as much as digits as its factorization.

11111102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555551063.

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

Adding to 11111102122 its reverse (22120111111), we get a palindrome (33231213233).

The spelling of 11111102122 in words is "eleven billion, one hundred eleven million, one hundred two thousand, one hundred twenty-two".