21303021312233 has 8 divisors (see below), whose sum is σ = 21351849013440. Its totient is φ = 21254194982160.

The previous prime is 21303021312151. The next prime is 21303021312239. The reversal of 21303021312233 is 33221312030312.

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 21303021312233 - 2⁸ = 21303021311977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303021312239) 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, 34914566 + ... + 35519472.

It is an arithmetic number, because the mean of its divisors is an integer number (2668981126680).

Almost surely, 2^{21303021312233} is an apocalyptic number.

It is an amenable number.

21303021312233 is a deficient number, since it is larger than the sum of its proper divisors (48827701207).

21303021312233 is an equidigital number, since it uses as much as digits as its factorization.

21303021312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685567.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21303021312233 its reverse (33221312030312), we get a palindrome (54524333342545).

The spelling of 21303021312233 in words is "twenty-one trillion, three hundred three billion, twenty-one million, three hundred twelve thousand, two hundred thirty-three".