1213313112073 has 2 divisors, whose sum is σ = 1213313112074. Its totient is φ = 1213313112072.

The previous prime is 1213313111987. The next prime is 1213313112127. The reversal of 1213313112073 is 3702113133121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038448635849 + 174864476224 = 1019043^2 + 418168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213313112073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213313112173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606656556036 + 606656556037.

It is an arithmetic number, because the mean of its divisors is an integer number (606656556037).

Almost surely, 2^{1213313112073} is an apocalyptic number.

It is an amenable number.

1213313112073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213313112073 is an equidigital number, since it uses as much as digits as its factorization.

1213313112073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

Adding to 1213313112073 its reverse (3702113133121), we get a palindrome (4915426245194).

The spelling of 1213313112073 in words is "one trillion, two hundred thirteen billion, three hundred thirteen million, one hundred twelve thousand, seventy-three".