12224444251 has 4 divisors (see below), whose sum is σ = 12229330672. Its totient is φ = 12219557832.

The previous prime is 12224444237. The next prime is 12224444261. The reversal of 12224444251 is 15244442221.

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 12224444251 - 2⁷ = 12224444123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12224444261) 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, 2439456 + ... + 2444461.

It is an arithmetic number, because the mean of its divisors is an integer number (3057332668).

Almost surely, 2^12224444251 is an apocalyptic number.

12224444251 is a deficient number, since it is larger than the sum of its proper divisors (4886421).

12224444251 is an equidigital number, since it uses as much as digits as its factorization.

12224444251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886420.

The product of its digits is 20480, while the sum is 31.

Adding to 12224444251 its reverse (15244442221), we get a palindrome (27468886472).

The spelling of 12224444251 in words is "twelve billion, two hundred twenty-four million, four hundred forty-four thousand, two hundred fifty-one".