11101108921 has 4 divisors (see below), whose sum is σ = 12686981632. Its totient is φ = 9515236212.

The previous prime is 11101108913. The next prime is 11101108943. The reversal of 11101108921 is 12980110111.

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.

It is a cyclic number.

It is not a de Polignac number, because 11101108921 - 2³ = 11101108913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101108961) 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, 792936345 + ... + 792936358.

It is an arithmetic number, because the mean of its divisors is an integer number (3171745408).

Almost surely, 2^11101108921 is an apocalyptic number.

It is an amenable number.

11101108921 is a deficient number, since it is larger than the sum of its proper divisors (1585872711).

11101108921 is an equidigital number, since it uses as much as digits as its factorization.

11101108921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585872710.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 11101108921 in words is "eleven billion, one hundred one million, one hundred eight thousand, nine hundred twenty-one".