12223421251 has 2 divisors, whose sum is σ = 12223421252. Its totient is φ = 12223421250.

The previous prime is 12223421237. The next prime is 12223421267. The reversal of 12223421251 is 15212432221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12223421251 - 2⁷ = 12223421123 is a prime.

It is not a weakly prime, because it can be changed into another prime (12223421291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111710625 + 6111710626.

It is an arithmetic number, because the mean of its divisors is an integer number (6111710626).

Almost surely, 2^12223421251 is an apocalyptic number.

12223421251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223421251 is an equidigital number, since it uses as much as digits as its factorization.

12223421251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

Adding to 12223421251 its reverse (15212432221), we get a palindrome (27435853472).

The spelling of 12223421251 in words is "twelve billion, two hundred twenty-three million, four hundred twenty-one thousand, two hundred fifty-one".