12426535021 has 8 divisors (see below), whose sum is σ = 13227537600. Its totient is φ = 11640229920.

The previous prime is 12426535019. The next prime is 12426535109. The reversal of 12426535021 is 12053562421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12426535021 - 2¹ = 12426535019 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 (12426535001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3672625 + ... + 3676006.

It is an arithmetic number, because the mean of its divisors is an integer number (1653442200).

Almost surely, 2^12426535021 is an apocalyptic number.

It is an amenable number.

12426535021 is a deficient number, since it is larger than the sum of its proper divisors (801002579).

12426535021 is an equidigital number, since it uses as much as digits as its factorization.

12426535021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348739.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 12426535021 in words is "twelve billion, four hundred twenty-six million, five hundred thirty-five thousand, twenty-one".