12421022479 has 2 divisors, whose sum is σ = 12421022480. Its totient is φ = 12421022478.

The previous prime is 12421022429. The next prime is 12421022491. The reversal of 12421022479 is 97422012421.

12421022479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12421022479 - 2⁷ = 12421022351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421022429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210511239 + 6210511240.

It is an arithmetic number, because the mean of its divisors is an integer number (6210511240).

Almost surely, 2^12421022479 is an apocalyptic number.

12421022479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421022479 is an equidigital number, since it uses as much as digits as its factorization.

12421022479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

It can be divided in two parts, 124210 and 22479, that added together give a square (146689 = 383²).

The spelling of 12421022479 in words is "twelve billion, four hundred twenty-one million, twenty-two thousand, four hundred seventy-nine".