21334210303421 has 8 divisors (see below), whose sum is σ = 21417871493304. Its totient is φ = 21250554142720.

The previous prime is 21334210303361. The next prime is 21334210303433. The reversal of 21334210303421 is 12430301243312.

It can be written as a sum of positive squares in 4 ways, for example, as 9262831380100 + 12071378923321 = 3043490^2 + 3474389^2 .

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 21334210303421 - 2¹⁴ = 21334210287037 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 (21334210303921) 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, 7359041 + ... + 9839913.

It is an arithmetic number, because the mean of its divisors is an integer number (2677233936663).

Almost surely, 2^{21334210303421} is an apocalyptic number.

It is an amenable number.

21334210303421 is a deficient number, since it is larger than the sum of its proper divisors (83661189883).

21334210303421 is a wasteful number, since it uses less digits than its factorization.

21334210303421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514591.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 21334210303421 its reverse (12430301243312), we get a palindrome (33764511546733).

The spelling of 21334210303421 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred ten million, three hundred three thousand, four hundred twenty-one".