21304322033 has 8 divisors (see below), whose sum is σ = 23400628800. Its totient is φ = 19305517968.

The previous prime is 21304322003. The next prime is 21304322047. The reversal of 21304322033 is 33022340312.

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 21304322033 - 2²⁸ = 21035886577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21304322003) 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, 24375218 + ... + 24376091.

It is an arithmetic number, because the mean of its divisors is an integer number (2925078600).

Almost surely, 2^21304322033 is an apocalyptic number.

21304322033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21304322033 is a deficient number, since it is larger than the sum of its proper divisors (2096306767).

21304322033 is a wasteful number, since it uses less digits than its factorization.

21304322033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48751351.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21304322033 its reverse (33022340312), we get a palindrome (54326662345).

The spelling of 21304322033 in words is "twenty-one billion, three hundred four million, three hundred twenty-two thousand, thirty-three".