11122191 has 20 divisors (see below), whose sum is σ = 16894504. Its totient is φ = 7290000.

The previous prime is 11122187. The next prime is 11122217. The reversal of 11122191 is 19122111.

It is a happy number.

It is not a de Polignac number, because 11122191 - 2² = 11122187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3816 + ... + 6066.

Almost surely, 2^11122191 is an apocalyptic number.

11122191 is a deficient number, since it is larger than the sum of its proper divisors (5772313).

11122191 is an equidigital number, since it uses as much as digits as its factorization.

11122191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324 (or 2315 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

The square root of 11122191 is about 3334.9949025448. The cubic root of 11122191 is about 223.2184644801.

The spelling of 11122191 in words is "eleven million, one hundred twenty-two thousand, one hundred ninety-one".