21141242333 has 2 divisors, whose sum is σ = 21141242334. Its totient is φ = 21141242332.

The previous prime is 21141242293. The next prime is 21141242341. The reversal of 21141242333 is 33324214112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20295421444 + 845820889 = 142462^2 + 29083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21141242333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141242383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570621166 + 10570621167.

It is an arithmetic number, because the mean of its divisors is an integer number (10570621167).

Almost surely, 2^21141242333 is an apocalyptic number.

It is an amenable number.

21141242333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141242333 is an equidigital number, since it uses as much as digits as its factorization.

21141242333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

Adding to 21141242333 its reverse (33324214112), we get a palindrome (54465456445).

The spelling of 21141242333 in words is "twenty-one billion, one hundred forty-one million, two hundred forty-two thousand, three hundred thirty-three".