12432121223 has 2 divisors, whose sum is σ = 12432121224. Its totient is φ = 12432121222.

The previous prime is 12432121201. The next prime is 12432121309. The reversal of 12432121223 is 32212123421.

It is a weak prime.

It is an emirp because it is prime and its reverse (32212123421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12432121223 - 2¹⁸ = 12431859079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12432121423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6216060611 + 6216060612.

It is an arithmetic number, because the mean of its divisors is an integer number (6216060612).

Almost surely, 2^12432121223 is an apocalyptic number.

12432121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12432121223 is an equidigital number, since it uses as much as digits as its factorization.

12432121223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

Adding to 12432121223 its reverse (32212123421), we get a palindrome (44644244644).

The spelling of 12432121223 in words is "twelve billion, four hundred thirty-two million, one hundred twenty-one thousand, two hundred twenty-three".