21332011333 has 4 divisors (see below), whose sum is σ = 21543219468. Its totient is φ = 21120803200.

The previous prime is 21332011321. The next prime is 21332011361. The reversal of 21332011333 is 33311023312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19008964129 + 2323047204 = 137873^2 + 48198^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332011333 - 2¹³ = 21332003141 is a prime.

It is a super-2 number, since 2×21332011333² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332011133) 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, 105603916 + ... + 105604117.

It is an arithmetic number, because the mean of its divisors is an integer number (5385804867).

Almost surely, 2^21332011333 is an apocalyptic number.

It is an amenable number.

21332011333 is a deficient number, since it is larger than the sum of its proper divisors (211208135).

21332011333 is a wasteful number, since it uses less digits than its factorization.

21332011333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211208134.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21332011333 its reverse (33311023312), we get a palindrome (54643034645).

The spelling of 21332011333 in words is "twenty-one billion, three hundred thirty-two million, eleven thousand, three hundred thirty-three".