21033322307 has 4 divisors (see below), whose sum is σ = 21034997280. Its totient is φ = 21031647336.

The previous prime is 21033322291. The next prime is 21033322393. The reversal of 21033322307 is 70322333012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21033322307 - 2⁴ = 21033322291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21033322397) 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, 818507 + ... + 843812.

It is an arithmetic number, because the mean of its divisors is an integer number (5258749320).

Almost surely, 2^21033322307 is an apocalyptic number.

21033322307 is a deficient number, since it is larger than the sum of its proper divisors (1674973).

21033322307 is a wasteful number, since it uses less digits than its factorization.

21033322307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674972.

The product of its (nonzero) digits is 4536, while the sum is 26.

Adding to 21033322307 its reverse (70322333012), we get a palindrome (91355655319).

The spelling of 21033322307 in words is "twenty-one billion, thirty-three million, three hundred twenty-two thousand, three hundred seven".