13422411421 has 4 divisors (see below), whose sum is σ = 14211965052. Its totient is φ = 12632857792.

The previous prime is 13422411419. The next prime is 13422411427. The reversal of 13422411421 is 12411422431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6109767225 + 7312644196 = 78165^2 + 85514^2 .

It is a cyclic number.

It is not a de Polignac number, because 13422411421 - 2¹ = 13422411419 is a prime.

It is a super-2 number, since 2×13422411421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13422411427) 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, 394776790 + ... + 394776823.

It is an arithmetic number, because the mean of its divisors is an integer number (3552991263).

Almost surely, 2^13422411421 is an apocalyptic number.

It is an amenable number.

13422411421 is a deficient number, since it is larger than the sum of its proper divisors (789553631).

13422411421 is an equidigital number, since it uses as much as digits as its factorization.

13422411421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789553630.

The product of its digits is 1536, while the sum is 25.

Adding to 13422411421 its reverse (12411422431), we get a palindrome (25833833852).

The spelling of 13422411421 in words is "thirteen billion, four hundred twenty-two million, four hundred eleven thousand, four hundred twenty-one".