12421022429 has 2 divisors, whose sum is σ = 12421022430. Its totient is φ = 12421022428.

The previous prime is 12421022417. The next prime is 12421022479. The reversal of 12421022429 is 92422012421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11347149529 + 1073872900 = 106523^2 + 32770^2 .

It is an emirp because it is prime and its reverse (92422012421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12421022429 - 2¹⁶ = 12420956893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421022479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210511214 + 6210511215.

It is an arithmetic number, because the mean of its divisors is an integer number (6210511215).

Almost surely, 2^12421022429 is an apocalyptic number.

It is an amenable number.

12421022429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421022429 is an equidigital number, since it uses as much as digits as its factorization.

12421022429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 12421022429 in words is "twelve billion, four hundred twenty-one million, twenty-two thousand, four hundred twenty-nine".