21013334233 has 2 divisors, whose sum is σ = 21013334234. Its totient is φ = 21013334232.

The previous prime is 21013334203. The next prime is 21013334263. The reversal of 21013334233 is 33243331012.

It is a balanced prime because it is at equal distance from previous prime (21013334203) and next prime (21013334263).

It can be written as a sum of positive squares in only one way, i.e., 20486769424 + 526564809 = 143132^2 + 22947^2 .

It is a cyclic number.

It is not a de Polignac number, because 21013334233 - 2²⁵ = 20979779801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21013334198 and 21013334207.

It is not a weakly prime, because it can be changed into another prime (21013334203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506667116 + 10506667117.

It is an arithmetic number, because the mean of its divisors is an integer number (10506667117).

Almost surely, 2^21013334233 is an apocalyptic number.

It is an amenable number.

21013334233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013334233 is an equidigital number, since it uses as much as digits as its factorization.

21013334233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21013334233 its reverse (33243331012), we get a palindrome (54256665245).

The spelling of 21013334233 in words is "twenty-one billion, thirteen million, three hundred thirty-four thousand, two hundred thirty-three".