13424503011421 has 4 divisors (see below), whose sum is σ = 13425670675612. Its totient is φ = 13423335347232.

The previous prime is 13424503011383. The next prime is 13424503011457. The reversal of 13424503011421 is 12411030542431.

It is a happy number.

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 8947343246521 + 4477159764900 = 2991211^2 + 2115930^2 .

It is a cyclic number.

It is not a de Polignac number, because 13424503011421 - 2²⁵ = 13424469456989 is a prime.

It is a super-2 number, since 2×13424503011421² (a number of 27 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 (13424503011481) 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, 583814850 + ... + 583837843.

It is an arithmetic number, because the mean of its divisors is an integer number (3356417668903).

Almost surely, 2^{13424503011421} is an apocalyptic number.

It is an amenable number.

13424503011421 is a deficient number, since it is larger than the sum of its proper divisors (1167664191).

13424503011421 is a wasteful number, since it uses less digits than its factorization.

13424503011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167664190.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 13424503011421 its reverse (12411030542431), we get a palindrome (25835533553852).

The spelling of 13424503011421 in words is "thirteen trillion, four hundred twenty-four billion, five hundred three million, eleven thousand, four hundred twenty-one".