21300211333 has 4 divisors (see below), whose sum is σ = 21301788960. Its totient is φ = 21298633708.

The previous prime is 21300211271. The next prime is 21300211397. The reversal of 21300211333 is 33311200312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21300211333 - 2²¹ = 21298114181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21300211333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300211433) 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, 768385 + ... + 795622.

It is an arithmetic number, because the mean of its divisors is an integer number (5325447240).

Almost surely, 2^21300211333 is an apocalyptic number.

It is an amenable number.

21300211333 is a deficient number, since it is larger than the sum of its proper divisors (1577627).

21300211333 is a wasteful number, since it uses less digits than its factorization.

21300211333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577626.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21300211333 its reverse (33311200312), we get a palindrome (54611411645).

The spelling of 21300211333 in words is "twenty-one billion, three hundred million, two hundred eleven thousand, three hundred thirty-three".