21833224733 has 4 divisors (see below), whose sum is σ = 21841653888. Its totient is φ = 21824795580.

The previous prime is 21833224723. The next prime is 21833224739. The reversal of 21833224733 is 33742233812.

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 21833224733 - 2⁴ = 21833224717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21833224739) 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, 4210691 + ... + 4215872.

It is an arithmetic number, because the mean of its divisors is an integer number (5460413472).

Almost surely, 2^21833224733 is an apocalyptic number.

It is an amenable number.

21833224733 is a deficient number, since it is larger than the sum of its proper divisors (8429155).

21833224733 is an equidigital number, since it uses as much as digits as its factorization.

21833224733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8429154.

The product of its digits is 145152, while the sum is 38.

The spelling of 21833224733 in words is "twenty-one billion, eight hundred thirty-three million, two hundred twenty-four thousand, seven hundred thirty-three".