11121013091 has 2 divisors, whose sum is σ = 11121013092. Its totient is φ = 11121013090.

The previous prime is 11121013051. The next prime is 11121013093. The reversal of 11121013091 is 19031012111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11121013091 - 2²² = 11116818787 is a prime.

Together with 11121013093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11121013093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560506545 + 5560506546.

It is an arithmetic number, because the mean of its divisors is an integer number (5560506546).

Almost surely, 2^11121013091 is an apocalyptic number.

11121013091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121013091 is an equidigital number, since it uses as much as digits as its factorization.

11121013091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 11121013091 in words is "eleven billion, one hundred twenty-one million, thirteen thousand, ninety-one".