13102312421 has 4 divisors (see below), whose sum is σ = 14293431744. Its totient is φ = 11911193100.

The previous prime is 13102312417. The next prime is 13102312469. The reversal of 13102312421 is 12421320131.

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 13102312421 - 2² = 13102312417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13102312393 and 13102312402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102312921) 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, 595559645 + ... + 595559666.

It is an arithmetic number, because the mean of its divisors is an integer number (3573357936).

Almost surely, 2^13102312421 is an apocalyptic number.

13102312421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13102312421 is a deficient number, since it is larger than the sum of its proper divisors (1191119323).

13102312421 is a wasteful number, since it uses less digits than its factorization.

13102312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191119322.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13102312421 its reverse (12421320131), we get a palindrome (25523632552).

It can be divided in two parts, 13102 and 312421, that added together give a palindrome (325523).

The spelling of 13102312421 in words is "thirteen billion, one hundred two million, three hundred twelve thousand, four hundred twenty-one".