11001122191 has 2 divisors, whose sum is σ = 11001122192. Its totient is φ = 11001122190.

The previous prime is 11001122183. The next prime is 11001122221. The reversal of 11001122191 is 19122110011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11001122191 - 2³ = 11001122183 is a prime.

It is a super-2 number, since 2×11001122191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001122491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500561095 + 5500561096.

It is an arithmetic number, because the mean of its divisors is an integer number (5500561096).

Almost surely, 2^11001122191 is an apocalyptic number.

11001122191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001122191 is an equidigital number, since it uses as much as digits as its factorization.

11001122191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 11001122191 in words is "eleven billion, one million, one hundred twenty-two thousand, one hundred ninety-one".