1213222222313 has 2 divisors, whose sum is σ = 1213222222314. Its totient is φ = 1213222222312.

The previous prime is 1213222222273. The next prime is 1213222222319. The reversal of 1213222222313 is 3132222223121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691645049104 + 521577173209 = 831652^2 + 722203^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213222222313 - 2⁸ = 1213222222057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213222222319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606611111156 + 606611111157.

It is an arithmetic number, because the mean of its divisors is an integer number (606611111157).

Almost surely, 2^{1213222222313} is an apocalyptic number.

It is an amenable number.

1213222222313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213222222313 is an equidigital number, since it uses as much as digits as its factorization.

1213222222313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

Adding to 1213222222313 its reverse (3132222223121), we get a palindrome (4345444445434).

The spelling of 1213222222313 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred thirteen".