12223491 has 20 divisors (see below), whose sum is σ = 19024392. Its totient is φ = 6980736.

The previous prime is 12223483. The next prime is 12223501. The reversal of 12223491 is 19432221.

It is not a de Polignac number, because 12223491 - 2³ = 12223483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12223411) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6355 + ... + 8051.

Almost surely, 2^12223491 is an apocalyptic number.

12223491 is a deficient number, since it is larger than the sum of its proper divisors (6800901).

12223491 is an frugal number, since it uses more digits than its factorization.

12223491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1707 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 12223491 is about 3496.2109490132. The cubic root of 12223491 is about 230.3554114441.

The spelling of 12223491 in words is "twelve million, two hundred twenty-three thousand, four hundred ninety-one".