21000334020311 has 8 divisors (see below), whose sum is σ = 21209909493504. Its totient is φ = 20790790927200.

The previous prime is 21000334020299. The next prime is 21000334020371. The reversal of 21000334020311 is 11302043300012.

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 21000334020311 - 2⁶ = 21000334020247 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 (21000334020371) 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, 6790391 + ... + 9386696.

It is an arithmetic number, because the mean of its divisors is an integer number (2651238686688).

Almost surely, 2^{21000334020311} is an apocalyptic number.

21000334020311 is a deficient number, since it is larger than the sum of its proper divisors (209575473193).

21000334020311 is a wasteful number, since it uses less digits than its factorization.

21000334020311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16190041.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21000334020311 its reverse (11302043300012), we get a palindrome (32302377320323).

The spelling of 21000334020311 in words is "twenty-one trillion, three hundred thirty-four million, twenty thousand, three hundred eleven".