21230230033 has 2 divisors, whose sum is σ = 21230230034. Its totient is φ = 21230230032.

The previous prime is 21230230009. The next prime is 21230230057. The reversal of 21230230033 is 33003203212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21230230009) and next prime (21230230057).

It can be written as a sum of positive squares in only one way, i.e., 17463093904 + 3767136129 = 132148^2 + 61377^2 .

It is a cyclic number.

It is not a de Polignac number, because 21230230033 - 2⁵ = 21230230001 is a prime.

It is not a weakly prime, because it can be changed into another prime (21230230733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615115016 + 10615115017.

It is an arithmetic number, because the mean of its divisors is an integer number (10615115017).

Almost surely, 2^21230230033 is an apocalyptic number.

It is an amenable number.

21230230033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230230033 is an equidigital number, since it uses as much as digits as its factorization.

21230230033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21230230033 its reverse (33003203212), we get a palindrome (54233433245).

The spelling of 21230230033 in words is "twenty-one billion, two hundred thirty million, two hundred thirty thousand, thirty-three".