21000322332211 has 4 divisors (see below), whose sum is σ = 21037229753400. Its totient is φ = 20963414911024.

The previous prime is 21000322332131. The next prime is 21000322332221. The reversal of 21000322332211 is 11223322300012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21000322332211 - 2⁷ = 21000322332083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000322332221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18453709741 + ... + 18453710878.

It is an arithmetic number, because the mean of its divisors is an integer number (5259307438350).

Almost surely, 2^{21000322332211} is an apocalyptic number.

21000322332211 is a deficient number, since it is larger than the sum of its proper divisors (36907421189).

21000322332211 is an equidigital number, since it uses as much as digits as its factorization.

21000322332211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36907421188.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21000322332211 its reverse (11223322300012), we get a palindrome (32223644632223).

The spelling of 21000322332211 in words is "twenty-one trillion, three hundred twenty-two million, three hundred thirty-two thousand, two hundred eleven".