21113433301421 has 8 divisors (see below), whose sum is σ = 21472310882400. Its totient is φ = 20754589813200.

The previous prime is 21113433301391. The next prime is 21113433301451. The reversal of 21113433301421 is 12410333431112.

It is an interprime number because it is at equal distance from previous prime (21113433301391) and next prime (21113433301451).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21113433301421 - 2¹⁸ = 21113433039277 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 (21113433301451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7272530 + ... + 9752771.

It is an arithmetic number, because the mean of its divisors is an integer number (2684038860300).

Almost surely, 2^{21113433301421} is an apocalyptic number.

It is an amenable number.

21113433301421 is a deficient number, since it is larger than the sum of its proper divisors (358877580979).

21113433301421 is a wasteful number, since it uses less digits than its factorization.

21113433301421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17046379.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 21113433301421 its reverse (12410333431112), we get a palindrome (33523766732533).

The spelling of 21113433301421 in words is "twenty-one trillion, one hundred thirteen billion, four hundred thirty-three million, three hundred one thousand, four hundred twenty-one".