21233110033 has 8 divisors (see below), whose sum is σ = 22656816800. Its totient is φ = 19840020768.

The previous prime is 21233110009. The next prime is 21233110069. The reversal of 21233110033 is 33001133212.

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-21233110033 is a prime.

It is a super-2 number, since 2×21233110033² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233110433) 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, 7652943 + ... + 7655716.

It is an arithmetic number, because the mean of its divisors is an integer number (2832102100).

Almost surely, 2^21233110033 is an apocalyptic number.

It is an amenable number.

21233110033 is a deficient number, since it is larger than the sum of its proper divisors (1423706767).

21233110033 is a wasteful number, since it uses less digits than its factorization.

21233110033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15308751.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21233110033 its reverse (33001133212), we get a palindrome (54234243245).

The spelling of 21233110033 in words is "twenty-one billion, two hundred thirty-three million, one hundred ten thousand, thirty-three".