21333301043 has 2 divisors, whose sum is σ = 21333301044. Its totient is φ = 21333301042.

The previous prime is 21333300983. The next prime is 21333301049. The reversal of 21333301043 is 34010333312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21333301043 - 2⁸ = 21333300787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21333301049) 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, 10666650521 + 10666650522.

It is an arithmetic number, because the mean of its divisors is an integer number (10666650522).

Almost surely, 2^21333301043 is an apocalyptic number.

21333301043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21333301043 is an equidigital number, since it uses as much as digits as its factorization.

21333301043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21333301043 its reverse (34010333312), we get a palindrome (55343634355).

The spelling of 21333301043 in words is "twenty-one billion, three hundred thirty-three million, three hundred one thousand, forty-three".