21304422033 has 4 divisors (see below), whose sum is σ = 28405896048. Its totient is φ = 14202948020.

The previous prime is 21304422023. The next prime is 21304422053. The reversal of 21304422033 is 33022440312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21304422033 - 2¹⁴ = 21304405649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21304421994 and 21304422012.

It is not an unprimeable number, because it can be changed into a prime (21304422023) 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, 3550737003 + ... + 3550737008.

It is an arithmetic number, because the mean of its divisors is an integer number (7101474012).

Almost surely, 2^21304422033 is an apocalyptic number.

It is an amenable number.

21304422033 is a deficient number, since it is larger than the sum of its proper divisors (7101474015).

21304422033 is an equidigital number, since it uses as much as digits as its factorization.

21304422033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101474014.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21304422033 its reverse (33022440312), we get a palindrome (54326862345).

The spelling of 21304422033 in words is "twenty-one billion, three hundred four million, four hundred twenty-two thousand, thirty-three".