12225799 has 4 divisors (see below), whose sum is σ = 12556264. Its totient is φ = 11895336.

The previous prime is 12225779. The next prime is 12225823. The reversal of 12225799 is 99752221.

12225799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12225799 - 2¹¹ = 12223751 is a prime.

It is a super-2 number, since 2×12225799² = 298940322376802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 330427 = 12225799 / (1 + 2 + 2 + 2 + 5 + 7 + 9 + 9).

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225709) 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, 165177 + ... + 165250.

It is an arithmetic number, because the mean of its divisors is an integer number (3139066).

Almost surely, 2^12225799 is an apocalyptic number.

12225799 is a deficient number, since it is larger than the sum of its proper divisors (330465).

12225799 is an equidigital number, since it uses as much as digits as its factorization.

12225799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330464.

The product of its digits is 22680, while the sum is 37.

The square root of 12225799 is about 3496.5410050506. The cubic root of 12225799 is about 230.3699088527.

It can be divided in two parts, 1222 and 5799, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 12225799 in words is "twelve million, two hundred twenty-five thousand, seven hundred ninety-nine".