13422033421 has 4 divisors (see below), whose sum is σ = 13422292000. Its totient is φ = 13421774844.

The previous prime is 13422033397. The next prime is 13422033437. The reversal of 13422033421 is 12433022431.

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: 12433022431 = 1289 ⋅9645479.

It is a cyclic number.

It is not a de Polignac number, because 13422033421 - 2⁷ = 13422033293 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 (13422043421) 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, 21441 + ... + 165238.

It is an arithmetic number, because the mean of its divisors is an integer number (3355573000).

Almost surely, 2^13422033421 is an apocalyptic number.

It is an amenable number.

13422033421 is a deficient number, since it is larger than the sum of its proper divisors (258579).

13422033421 is an equidigital number, since it uses as much as digits as its factorization.

13422033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258578.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13422033421 its reverse (12433022431), we get a palindrome (25855055852).

The spelling of 13422033421 in words is "thirteen billion, four hundred twenty-two million, thirty-three thousand, four hundred twenty-one".