12222544 has 20 divisors (see below), whose sum is σ = 23842720. Its totient is φ = 6069600.

The previous prime is 12222533. The next prime is 12222547. The reversal of 12222544 is 44522221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114 + ... + 4945.

It is an arithmetic number, because the mean of its divisors is an integer number (1192136).

Almost surely, 2^12222544 is an apocalyptic number.

It is an amenable number.

12222544 is a deficient number, since it is larger than the sum of its proper divisors (11620176).

12222544 is a wasteful number, since it uses less digits than its factorization.

12222544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218 (or 5212 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 12222544 is about 3496.0755140586. The cubic root of 12222544 is about 230.3494624559.

Adding to 12222544 its reverse (44522221), we get a palindrome (56744765).

The spelling of 12222544 in words is "twelve million, two hundred twenty-two thousand, five hundred forty-four".