11223291 has 4 divisors (see below), whose sum is σ = 14964392. Its totient is φ = 7482192.

The previous prime is 11223283. The next prime is 11223313. The reversal of 11223291 is 19232211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11223291 - 2³ = 11223283 is a prime.

It is a super-3 number, since 3×11223291³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222291) 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 3 ways as a sum of consecutive naturals, for example, 1870546 + ... + 1870551.

It is an arithmetic number, because the mean of its divisors is an integer number (3741098).

Almost surely, 2^11223291 is an apocalyptic number.

11223291 is a deficient number, since it is larger than the sum of its proper divisors (3741101).

11223291 is an equidigital number, since it uses as much as digits as its factorization.

11223291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741100.

The product of its digits is 216, while the sum is 21.

The square root of 11223291 is about 3350.1180576213. The cubic root of 11223291 is about 223.8927726056.

The spelling of 11223291 in words is "eleven million, two hundred twenty-three thousand, two hundred ninety-one".