12421234309 has 12 divisors (see below), whose sum is σ = 13658823360. Its totient is φ = 11287291400.

The previous prime is 12421234303. The next prime is 12421234313. The reversal of 12421234309 is 90343212421.

It is not a de Polignac number, because 12421234309 - 2¹⁹ = 12420710021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421234303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285972 + ... + 326530.

It is an arithmetic number, because the mean of its divisors is an integer number (1138235280).

Almost surely, 2^12421234309 is an apocalyptic number.

It is an amenable number.

12421234309 is a deficient number, since it is larger than the sum of its proper divisors (1237589051).

12421234309 is a wasteful number, since it uses less digits than its factorization.

12421234309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43112 (or 43101 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 12421234309 in words is "twelve billion, four hundred twenty-one million, two hundred thirty-four thousand, three hundred nine".