11100322121 has 4 divisors (see below), whose sum is σ = 12686082432. Its totient is φ = 9514561812.

The previous prime is 11100322043. The next prime is 11100322183. The reversal of 11100322121 is 12122300111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12122300111 = 7013 ⋅1728547.

It is a de Polignac number, because none of the positive numbers 2^k-11100322121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100322096 and 11100322105.

It is not an unprimeable number, because it can be changed into a prime (11100322921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792880145 + ... + 792880158.

It is an arithmetic number, because the mean of its divisors is an integer number (3171520608).

Almost surely, 2^11100322121 is an apocalyptic number.

It is an amenable number.

11100322121 is a deficient number, since it is larger than the sum of its proper divisors (1585760311).

11100322121 is an equidigital number, since it uses as much as digits as its factorization.

11100322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585760310.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11100322121 its reverse (12122300111), we get a palindrome (23222622232).

The spelling of 11100322121 in words is "eleven billion, one hundred million, three hundred twenty-two thousand, one hundred twenty-one".