21332032033 has 4 divisors (see below), whose sum is σ = 22972957588. Its totient is φ = 19691106480.

The previous prime is 21332031997. The next prime is 21332032039. The reversal of 21332032033 is 33023023312.

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 11040335329 + 10291696704 = 105073^2 + 101448^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332032033 - 2²¹ = 21329934881 is a prime.

It is a super-2 number, since 2×21332032033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21332031995 and 21332032013.

It is not an unprimeable number, because it can be changed into a prime (21332032039) 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, 820462758 + ... + 820462783.

It is an arithmetic number, because the mean of its divisors is an integer number (5743239397).

Almost surely, 2^21332032033 is an apocalyptic number.

It is an amenable number.

21332032033 is a deficient number, since it is larger than the sum of its proper divisors (1640925555).

21332032033 is a wasteful number, since it uses less digits than its factorization.

21332032033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640925554.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 21332032033 its reverse (33023023312), we get a palindrome (54355055345).

The spelling of 21332032033 in words is "twenty-one billion, three hundred thirty-two million, thirty-two thousand, thirty-three".