1213240033 has 2 divisors, whose sum is σ = 1213240034. Its totient is φ = 1213240032.

The previous prime is 1213240001. The next prime is 1213240057. The reversal of 1213240033 is 3300423121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745945344 + 467294689 = 27312^2 + 21617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213240033 - 2⁵ = 1213240001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213240733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606620016 + 606620017.

It is an arithmetic number, because the mean of its divisors is an integer number (606620017).

Almost surely, 2^1213240033 is an apocalyptic number.

It is an amenable number.

1213240033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213240033 is an equidigital number, since it uses as much as digits as its factorization.

1213240033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1213240033 is about 34831.5953266571. The cubic root of 1213240033 is about 1066.5525148133.

Adding to 1213240033 its reverse (3300423121), we get a palindrome (4513663154).

The spelling of 1213240033 in words is "one billion, two hundred thirteen million, two hundred forty thousand, thirty-three".