12402322320421 has 4 divisors (see below), whose sum is σ = 13529806167744. Its totient is φ = 11274838473100.

The previous prime is 12402322320317. The next prime is 12402322320431.

12402322320421 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 12402322320421 - 2⁷ = 12402322320293 is a prime.

It is a super-2 number, since 2×12402322320421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12402322320421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402322320431) 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 in 3 ways as a sum of consecutive naturals, for example, 563741923645 + ... + 563741923666.

It is an arithmetic number, because the mean of its divisors is an integer number (3382451541936).

Almost surely, 2^{12402322320421} is an apocalyptic number.

12402322320421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12402322320421 is a deficient number, since it is larger than the sum of its proper divisors (1127483847323).

12402322320421 is a wasteful number, since it uses less digits than its factorization.

12402322320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127483847322.

The product of its (nonzero) digits is 9216, while the sum is 28.

It can be divided in two parts, 1240232 and 2320421, that added together give a palindrome (3560653).

The spelling of 12402322320421 in words is "twelve trillion, four hundred two billion, three hundred twenty-two million, three hundred twenty thousand, four hundred twenty-one".