21411334321 has 8 divisors (see below), whose sum is σ = 23065546280. Its totient is φ = 19758148992.

The previous prime is 21411334303. The next prime is 21411334333. The reversal of 21411334321 is 12343311412.

It can be written as a sum of positive squares in 4 ways, for example, as 186049600 + 21225284721 = 13640^2 + 145689^2 .

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 21411334321 - 2⁹ = 21411333809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21411374321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213060 + ... + 297013.

It is an arithmetic number, because the mean of its divisors is an integer number (2883193285).

Almost surely, 2^21411334321 is an apocalyptic number.

It is an amenable number.

21411334321 is a deficient number, since it is larger than the sum of its proper divisors (1654211959).

21411334321 is a wasteful number, since it uses less digits than its factorization.

21411334321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513315.

The product of its digits is 1728, while the sum is 25.

Adding to 21411334321 its reverse (12343311412), we get a palindrome (33754645733).

The spelling of 21411334321 in words is "twenty-one billion, four hundred eleven million, three hundred thirty-four thousand, three hundred twenty-one".