21122343133 has 2 divisors, whose sum is σ = 21122343134. Its totient is φ = 21122343132.

The previous prime is 21122343113. The next prime is 21122343157. The reversal of 21122343133 is 33134322112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20541195684 + 581147449 = 143322^2 + 24107^2 .

It is a cyclic number.

It is not a de Polignac number, because 21122343133 - 2²¹ = 21120245981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21122343098 and 21122343107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21122343113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561171566 + 10561171567.

It is an arithmetic number, because the mean of its divisors is an integer number (10561171567).

Almost surely, 2^21122343133 is an apocalyptic number.

It is an amenable number.

21122343133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122343133 is an equidigital number, since it uses as much as digits as its factorization.

21122343133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

Adding to 21122343133 its reverse (33134322112), we get a palindrome (54256665245).

The spelling of 21122343133 in words is "twenty-one billion, one hundred twenty-two million, three hundred forty-three thousand, one hundred thirty-three".