13140100123421 has 4 divisors (see below), whose sum is σ = 13144044918144. Its totient is φ = 13136155328700.

The previous prime is 13140100123417. The next prime is 13140100123459. The reversal of 13140100123421 is 12432100104131.

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 13140100123421 - 2² = 13140100123417 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 (13140100123121) 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, 1972392365 + ... + 1972399026.

It is an arithmetic number, because the mean of its divisors is an integer number (3286011229536).

Almost surely, 2^{13140100123421} is an apocalyptic number.

It is an amenable number.

13140100123421 is a deficient number, since it is larger than the sum of its proper divisors (3944794723).

13140100123421 is an equidigital number, since it uses as much as digits as its factorization.

13140100123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944794722.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 13140100123421 its reverse (12432100104131), we get a palindrome (25572200227552).

The spelling of 13140100123421 in words is "thirteen trillion, one hundred forty billion, one hundred million, one hundred twenty-three thousand, four hundred twenty-one".