11141121091 has 4 divisors (see below), whose sum is σ = 11141333784. Its totient is φ = 11140908400.

The previous prime is 11141121073. The next prime is 11141121127. The reversal of 11141121091 is 19012114111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11141121091 - 2⁵ = 11141121059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11141121011) 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, 33711 + ... + 153031.

It is an arithmetic number, because the mean of its divisors is an integer number (2785333446).

Almost surely, 2^11141121091 is an apocalyptic number.

11141121091 is a deficient number, since it is larger than the sum of its proper divisors (212693).

11141121091 is an equidigital number, since it uses as much as digits as its factorization.

11141121091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212692.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 11141121091 in words is "eleven billion, one hundred forty-one million, one hundred twenty-one thousand, ninety-one".