11111200122 has 64 divisors (see below), whose sum is σ = 24951619584. Its totient is φ = 3268952640.

The previous prime is 11111200117. The next prime is 11111200147. The reversal of 11111200122 is 22100211111.

It is a super-2 number, since 2×11111200122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111200098 and 11111200107.

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 31 ways as a sum of consecutive naturals, for example, 1184583 + ... + 1193925.

It is an arithmetic number, because the mean of its divisors is an integer number (389869056).

Almost surely, 2^11111200122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111200122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12475809792).

11111200122 is an abundant number, since it is smaller than the sum of its proper divisors (13840419462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111200122 is a wasteful number, since it uses less digits than its factorization.

11111200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9883.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11111200122 its reverse (22100211111), we get a palindrome (33211411233).

The spelling of 11111200122 in words is "eleven billion, one hundred eleven million, two hundred thousand, one hundred twenty-two".