21331114333 has 2 divisors, whose sum is σ = 21331114334. Its totient is φ = 21331114332.

The previous prime is 21331114331. The next prime is 21331114367. The reversal of 21331114333 is 33341113312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20644517124 + 686597209 = 143682^2 + 26203^2 .

It is a cyclic number.

It is not a de Polignac number, because 21331114333 - 2¹ = 21331114331 is a prime.

Together with 21331114331, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21331114298 and 21331114307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21331114331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665557166 + 10665557167.

It is an arithmetic number, because the mean of its divisors is an integer number (10665557167).

Almost surely, 2^21331114333 is an apocalyptic number.

It is an amenable number.

21331114333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21331114333 is an equidigital number, since it uses as much as digits as its factorization.

21331114333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

Adding to 21331114333 its reverse (33341113312), we get a palindrome (54672227645).

It can be divided in two parts, 2133111 and 4333, that added together give a square (2137444 = 1462²).

The spelling of 21331114333 in words is "twenty-one billion, three hundred thirty-one million, one hundred fourteen thousand, three hundred thirty-three".