12222737 has 4 divisors (see below), whose sum is σ = 12249600. Its totient is φ = 12195876.

The previous prime is 12222733. The next prime is 12222751. The reversal of 12222737 is 73722221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73722221 = 61 ⋅1208561.

It is a cyclic number.

It is not a de Polignac number, because 12222737 - 2² = 12222733 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12222731) 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, 12737 + ... + 13662.

It is an arithmetic number, because the mean of its divisors is an integer number (3062400).

Almost surely, 2^12222737 is an apocalyptic number.

It is an amenable number.

12222737 is a deficient number, since it is larger than the sum of its proper divisors (26863).

12222737 is an equidigital number, since it uses as much as digits as its factorization.

12222737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26862.

The product of its digits is 2352, while the sum is 26.

The square root of 12222737 is about 3496.1031163282. The cubic root of 12222737 is about 230.3506748934.

Adding to 12222737 its reverse (73722221), we get a palindrome (85944958).

The spelling of 12222737 in words is "twelve million, two hundred twenty-two thousand, seven hundred thirty-seven".