13204414021 has 4 divisors (see below), whose sum is σ = 13899383200. Its totient is φ = 12509444844.

The previous prime is 13204414007. The next prime is 13204414031. The reversal of 13204414021 is 12041440231.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12041440231 = 74203 ⋅162277.

It is a cyclic number.

It is not a de Polignac number, because 13204414021 - 2¹¹ = 13204411973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13204413983 and 13204414001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204414031) 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, 347484561 + ... + 347484598.

It is an arithmetic number, because the mean of its divisors is an integer number (3474845800).

Almost surely, 2^13204414021 is an apocalyptic number.

It is an amenable number.

13204414021 is a deficient number, since it is larger than the sum of its proper divisors (694969179).

13204414021 is an equidigital number, since it uses as much as digits as its factorization.

13204414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694969178.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13204414021 its reverse (12041440231), we get a palindrome (25245854252).

The spelling of 13204414021 in words is "thirteen billion, two hundred four million, four hundred fourteen thousand, twenty-one".