21321222320011 has 8 divisors (see below), whose sum is σ = 22077665438400. Its totient is φ = 20566194438720.

The previous prime is 21321222319997. The next prime is 21321222320023. The reversal of 21321222320011 is 11002322212312.

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 21321222320011 - 2²⁵ = 21321188765579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21321222320071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353778610 + ... + 353838871.

It is an arithmetic number, because the mean of its divisors is an integer number (2759708179800).

Almost surely, 2^{21321222320011} is an apocalyptic number.

21321222320011 is a deficient number, since it is larger than the sum of its proper divisors (756443118389).

21321222320011 is a wasteful number, since it uses less digits than its factorization.

21321222320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707618549.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21321222320011 its reverse (11002322212312), we get a palindrome (32323544532323).

The spelling of 21321222320011 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred twenty-two million, three hundred twenty thousand, eleven".