11222319991 has 4 divisors (see below), whose sum is σ = 11271757752. Its totient is φ = 11172882232.

The previous prime is 11222319959. The next prime is 11222320001. The reversal of 11222319991 is 19991322211.

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 11222319991 - 2⁵ = 11222319959 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 (11222319931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24718540 + ... + 24718993.

It is an arithmetic number, because the mean of its divisors is an integer number (2817939438).

Almost surely, 2^11222319991 is an apocalyptic number.

11222319991 is a deficient number, since it is larger than the sum of its proper divisors (49437761).

11222319991 is an equidigital number, since it uses as much as digits as its factorization.

11222319991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49437760.

The product of its digits is 17496, while the sum is 40.

The spelling of 11222319991 in words is "eleven billion, two hundred twenty-two million, three hundred nineteen thousand, nine hundred ninety-one".