11223221915 has 4 divisors (see below), whose sum is σ = 13467866304. Its totient is φ = 8978577528.

The previous prime is 11223221851. The next prime is 11223221917. The reversal of 11223221915 is 51912232211.

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 11223221915 - 2⁶ = 11223221851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11223221917) 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, 1122322187 + ... + 1122322196.

It is an arithmetic number, because the mean of its divisors is an integer number (3366966576).

Almost surely, 2^11223221915 is an apocalyptic number.

11223221915 is a deficient number, since it is larger than the sum of its proper divisors (2244644389).

11223221915 is an equidigital number, since it uses as much as digits as its factorization.

11223221915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244644388.

The product of its digits is 2160, while the sum is 29.

The spelling of 11223221915 in words is "eleven billion, two hundred twenty-three million, two hundred twenty-one thousand, nine hundred fifteen".