12222637 has 16 divisors (see below), whose sum is σ = 14757120. Its totient is φ = 9896832.

The previous prime is 12222629. The next prime is 12222641. The reversal of 12222637 is 73622221.

It is a cyclic number.

It is not a de Polignac number, because 12222637 - 2³ = 12222629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13903 + ... + 14755.

It is an arithmetic number, because the mean of its divisors is an integer number (922320).

Almost surely, 2^12222637 is an apocalyptic number.

It is an amenable number.

12222637 is a deficient number, since it is larger than the sum of its proper divisors (2534483).

12222637 is an equidigital number, since it uses as much as digits as its factorization.

12222637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its digits is 2016, while the sum is 25.

The square root of 12222637 is about 3496.0888146613. The cubic root of 12222637 is about 230.3500466891.

Adding to 12222637 its reverse (73622221), we get a palindrome (85844858).

The spelling of 12222637 in words is "twelve million, two hundred twenty-two thousand, six hundred thirty-seven".