11222399 has 4 divisors (see below), whose sum is σ = 11229960. Its totient is φ = 11214840.

The previous prime is 11222357. The next prime is 11222417. The reversal of 11222399 is 99322211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737 + ... + 4794.

It is an arithmetic number, because the mean of its divisors is an integer number (2807490).

Almost surely, 2^11222399 is an apocalyptic number.

11222399 is a deficient number, since it is larger than the sum of its proper divisors (7561).

11222399 is an equidigital number, since it uses as much as digits as its factorization.

11222399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560.

The product of its digits is 1944, while the sum is 29.

The square root of 11222399 is about 3349.9849253392. The cubic root of 11222399 is about 223.8868409632.

The spelling of 11222399 in words is "eleven million, two hundred twenty-two thousand, three hundred ninety-nine".