21332311033 has 16 divisors (see below), whose sum is σ = 23456931840. Its totient is φ = 19238922000.

The previous prime is 21332311003. The next prime is 21332311061. The reversal of 21332311033 is 33011323312.

It is a cyclic number.

It is not a de Polignac number, because 21332311033 - 2⁵ = 21332311001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21332310995 and 21332311013.

It is not an unprimeable number, because it can be changed into a prime (21332311003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1299048 + ... + 1315366.

It is an arithmetic number, because the mean of its divisors is an integer number (1466058240).

Almost surely, 2^21332311033 is an apocalyptic number.

It is an amenable number.

21332311033 is a deficient number, since it is larger than the sum of its proper divisors (2124620807).

21332311033 is a wasteful number, since it uses less digits than its factorization.

21332311033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17268.

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

Adding to 21332311033 its reverse (33011323312), we get a palindrome (54343634345).

The spelling of 21332311033 in words is "twenty-one billion, three hundred thirty-two million, three hundred eleven thousand, thirty-three".