12461322316421 has 4 divisors (see below), whose sum is σ = 13594169799744. Its totient is φ = 11328474833100.

The previous prime is 12461322316393. The next prime is 12461322316427.

12461322316421 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 a de Polignac number, because none of the positive numbers 2^k-12461322316421 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 (12461322316427) 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 3 ways as a sum of consecutive naturals, for example, 566423741645 + ... + 566423741666.

It is an arithmetic number, because the mean of its divisors is an integer number (3398542449936).

Almost surely, 2^{12461322316421} is an apocalyptic number.

12461322316421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12461322316421 is a deficient number, since it is larger than the sum of its proper divisors (1132847483323).

12461322316421 is a wasteful number, since it uses less digits than its factorization.

12461322316421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132847483322.

The product of its digits is 82944, while the sum is 38.

The spelling of 12461322316421 in words is "twelve trillion, four hundred sixty-one billion, three hundred twenty-two million, three hundred sixteen thousand, four hundred twenty-one".