21042200033 has 8 divisors (see below), whose sum is σ = 21640661952. Its totient is φ = 20445304176.

The previous prime is 21042200021. The next prime is 21042200059. The reversal of 21042200033 is 33000224012.

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 21042200033 - 2⁸ = 21042199777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21042199984 and 21042200020.

It is not an unprimeable number, because it can be changed into a prime (21042200083) 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, 364235 + ... + 418032.

It is an arithmetic number, because the mean of its divisors is an integer number (2705082744).

Almost surely, 2^21042200033 is an apocalyptic number.

It is an amenable number.

21042200033 is a deficient number, since it is larger than the sum of its proper divisors (598461919).

21042200033 is an equidigital number, since it uses as much as digits as its factorization.

21042200033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783031.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21042200033 its reverse (33000224012), we get a palindrome (54042424045).

The spelling of 21042200033 in words is "twenty-one billion, forty-two million, two hundred thousand, thirty-three".