21313301010233 has 4 divisors (see below), whose sum is σ = 21313325701860. Its totient is φ = 21313276318608.

The previous prime is 21313301010223. The next prime is 21313301010241. The reversal of 21313301010233 is 33201010331312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4839419217424 + 16473881792809 = 2199868^2 + 4058803^2 .

It is a cyclic number.

It is not a de Polignac number, because 21313301010233 - 2⁴ = 21313301010217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21313301010199 and 21313301010208.

It is not an unprimeable number, because it can be changed into a prime (21313301010223) 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, 11002310 + ... + 12793647.

It is an arithmetic number, because the mean of its divisors is an integer number (5328331425465).

Almost surely, 2^{21313301010233} is an apocalyptic number.

It is an amenable number.

21313301010233 is a deficient number, since it is larger than the sum of its proper divisors (24691627).

21313301010233 is an equidigital number, since it uses as much as digits as its factorization.

21313301010233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24691626.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21313301010233 its reverse (33201010331312), we get a palindrome (54514311341545).

The spelling of 21313301010233 in words is "twenty-one trillion, three hundred thirteen billion, three hundred one million, ten thousand, two hundred thirty-three".