13203241421 has 4 divisors (see below), whose sum is σ = 13203567552. Its totient is φ = 13202915292.

The previous prime is 13203241411. The next prime is 13203241483. The reversal of 13203241421 is 12414230231.

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 13203241421 - 2¹⁴ = 13203225037 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 (13203241411) 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, 92021 + ... + 186746.

It is an arithmetic number, because the mean of its divisors is an integer number (3300891888).

Almost surely, 2^13203241421 is an apocalyptic number.

It is an amenable number.

13203241421 is a deficient number, since it is larger than the sum of its proper divisors (326131).

13203241421 is an equidigital number, since it uses as much as digits as its factorization.

13203241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326130.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13203241421 its reverse (12414230231), we get a palindrome (25617471652).

The spelling of 13203241421 in words is "thirteen billion, two hundred three million, two hundred forty-one thousand, four hundred twenty-one".