21001224300233 has 8 divisors (see below), whose sum is σ = 21008981197248. Its totient is φ = 20993467791024.

The previous prime is 21001224300227. The next prime is 21001224300349. The reversal of 21001224300233 is 33200342210012.

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 21001224300233 - 2³² = 20996929332937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21001224300199 and 21001224300208.

It is not an unprimeable number, because it can be changed into a prime (21001224300223) 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, 150689660 + ... + 150828962.

It is an arithmetic number, because the mean of its divisors is an integer number (2626122649656).

Almost surely, 2^{21001224300233} is an apocalyptic number.

It is an amenable number.

21001224300233 is a deficient number, since it is larger than the sum of its proper divisors (7756897015).

21001224300233 is a wasteful number, since it uses less digits than its factorization.

21001224300233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193903.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21001224300233 its reverse (33200342210012), we get a palindrome (54201566510245).

The spelling of 21001224300233 in words is "twenty-one trillion, one billion, two hundred twenty-four million, three hundred thousand, two hundred thirty-three".