1213200013 has 2 divisors, whose sum is σ = 1213200014. Its totient is φ = 1213200012.

The previous prime is 1213199969. The next prime is 1213200017. The reversal of 1213200013 is 3100023121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1143927684 + 69272329 = 33822^2 + 8323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213200013 - 2¹³ = 1213191821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213199966 and 1213200002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213200017) 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, 606600006 + 606600007.

It is an arithmetic number, because the mean of its divisors is an integer number (606600007).

Almost surely, 2^1213200013 is an apocalyptic number.

It is an amenable number.

1213200013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213200013 is an equidigital number, since it uses as much as digits as its factorization.

1213200013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1213200013 is about 34831.0208434952. The cubic root of 1213200013 is about 1066.5407875651.

Adding to 1213200013 its reverse (3100023121), we get a palindrome (4313223134).

The spelling of 1213200013 in words is "one billion, two hundred thirteen million, two hundred thousand, thirteen".