12466072321 has 4 divisors (see below), whose sum is σ = 12466428352. Its totient is φ = 12465716292.

The previous prime is 12466072303. The next prime is 12466072379. The reversal of 12466072321 is 12327066421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12327066421 = 1733 ⋅7113137.

It is a cyclic number.

It is not a de Polignac number, because 12466072321 - 2⁹ = 12466071809 is a prime.

It is a super-2 number, since 2×12466072321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12466072721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118965 + ... + 197698.

It is an arithmetic number, because the mean of its divisors is an integer number (3116607088).

Almost surely, 2^12466072321 is an apocalyptic number.

It is an amenable number.

12466072321 is a deficient number, since it is larger than the sum of its proper divisors (356031).

12466072321 is an equidigital number, since it uses as much as digits as its factorization.

12466072321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356030.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 12466072321 in words is "twelve billion, four hundred sixty-six million, seventy-two thousand, three hundred twenty-one".