11131223199 has 4 divisors (see below), whose sum is σ = 14841630936. Its totient is φ = 7420815464.

The previous prime is 11131223171. The next prime is 11131223237. The reversal of 11131223199 is 99132213111.

It is a happy number.

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 11131223199 - 2⁷ = 11131223071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131223119) 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, 1855203864 + ... + 1855203869.

It is an arithmetic number, because the mean of its divisors is an integer number (3710407734).

Almost surely, 2^11131223199 is an apocalyptic number.

11131223199 is a deficient number, since it is larger than the sum of its proper divisors (3710407737).

11131223199 is an equidigital number, since it uses as much as digits as its factorization.

11131223199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710407736.

The product of its digits is 2916, while the sum is 33.

The spelling of 11131223199 in words is "eleven billion, one hundred thirty-one million, two hundred twenty-three thousand, one hundred ninety-nine".