12226572 has 24 divisors (see below), whose sum is σ = 31698800. Its totient is φ = 4075488.

The previous prime is 12226561. The next prime is 12226573. The reversal of 12226572 is 27562221.

12226572 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 657 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12226573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56497 + ... + 56712.

Almost surely, 2^12226572 is an apocalyptic number.

12226572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12226572 is an abundant number, since it is smaller than the sum of its proper divisors (19472228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12226572 is a wasteful number, since it uses less digits than its factorization.

12226572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113222 (or 113214 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12226572 is about 3496.6515411176. The cubic root of 12226572 is about 230.3747639460.

Adding to 12226572 its reverse (27562221), we get a palindrome (39788793).

The spelling of 12226572 in words is "twelve million, two hundred twenty-six thousand, five hundred seventy-two".