21332231311 has 8 divisors (see below), whose sum is σ = 21549726864. Its totient is φ = 21114859200.

The previous prime is 21332231233. The next prime is 21332231317. The reversal of 21332231311 is 11313223312.

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 21332231311 - 2¹¹ = 21332229263 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 (21332231317) 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, 338955 + ... + 396931.

It is an arithmetic number, because the mean of its divisors is an integer number (2693715858).

Almost surely, 2^21332231311 is an apocalyptic number.

21332231311 is a deficient number, since it is larger than the sum of its proper divisors (217495553).

21332231311 is a wasteful number, since it uses less digits than its factorization.

21332231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61721.

The product of its digits is 648, while the sum is 22.

Adding to 21332231311 its reverse (11313223312), we get a palindrome (32645454623).

The spelling of 21332231311 in words is "twenty-one billion, three hundred thirty-two million, two hundred thirty-one thousand, three hundred eleven".