21233023303133 has 2 divisors, whose sum is σ = 21233023303134. Its totient is φ = 21233023303132.

The previous prime is 21233023303117. The next prime is 21233023303139. The reversal of 21233023303133 is 33130332033212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21197939390884 + 35083912249 = 4604122^2 + 187307^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233023303133 - 2⁴ = 21233023303117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21233023303096 and 21233023303105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233023303139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616511651566 + 10616511651567.

It is an arithmetic number, because the mean of its divisors is an integer number (10616511651567).

Almost surely, 2^{21233023303133} is an apocalyptic number.

It is an amenable number.

21233023303133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233023303133 is an equidigital number, since it uses as much as digits as its factorization.

21233023303133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 21233023303133 its reverse (33130332033212), we get a palindrome (54363355336345).

The spelling of 21233023303133 in words is "twenty-one trillion, two hundred thirty-three billion, twenty-three million, three hundred three thousand, one hundred thirty-three".