21323122033 has 8 divisors (see below), whose sum is σ = 21436155200. Its totient is φ = 21210148080.

The previous prime is 21323122013. The next prime is 21323122061. The reversal of 21323122033 is 33022132312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21323122033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323121995 and 21323122013.

It is not an unprimeable number, because it can be changed into a prime (21323122013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835366 + ... + 860512.

It is an arithmetic number, because the mean of its divisors is an integer number (2679519400).

Almost surely, 2^21323122033 is an apocalyptic number.

It is an amenable number.

21323122033 is a deficient number, since it is larger than the sum of its proper divisors (113033167).

21323122033 is a wasteful number, since it uses less digits than its factorization.

21323122033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29607.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21323122033 its reverse (33022132312), we get a palindrome (54345254345).

The spelling of 21323122033 in words is "twenty-one billion, three hundred twenty-three million, one hundred twenty-two thousand, thirty-three".