11100422121 has 16 divisors (see below), whose sum is σ = 15009302784. Its totient is φ = 7295992704.

The previous prime is 11100422089. The next prime is 11100422129. The reversal of 11100422121 is 12122400111.

It is not a de Polignac number, because 11100422121 - 2⁵ = 11100422089 is a prime.

It is a super-2 number, since 2×11100422121² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11100422121.

It is not an unprimeable number, because it can be changed into a prime (11100422129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632355 + ... + 649671.

It is an arithmetic number, because the mean of its divisors is an integer number (938081424).

Almost surely, 2^11100422121 is an apocalyptic number.

It is an amenable number.

11100422121 is a deficient number, since it is larger than the sum of its proper divisors (3908880663).

11100422121 is a wasteful number, since it uses less digits than its factorization.

11100422121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20320.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11100422121 its reverse (12122400111), we get a palindrome (23222822232).

The spelling of 11100422121 in words is "eleven billion, one hundred million, four hundred twenty-two thousand, one hundred twenty-one".