12222736 has 10 divisors (see below), whose sum is σ = 23681582. Its totient is φ = 6111360.

The previous prime is 12222733. The next prime is 12222751. The reversal of 12222736 is 63722221.

It can be written as a sum of positive squares in only one way, i.e., 11182336 + 1040400 = 3344^2 + 1020^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12222736.

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 as a sum of consecutive naturals, namely, 381945 + ... + 381976.

Almost surely, 2^12222736 is an apocalyptic number.

12222736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12222736 is a deficient number, since it is larger than the sum of its proper divisors (11458846).

12222736 is an equidigital number, since it uses as much as digits as its factorization.

12222736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763929 (or 763923 counting only the distinct ones).

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

The square root of 12222736 is about 3496.1029733119. The cubic root of 12222736 is about 230.3506686114.

Adding to 12222736 its reverse (63722221), we get a palindrome (75944957).

The spelling of 12222736 in words is "twelve million, two hundred twenty-two thousand, seven hundred thirty-six".