1222023613 has 2 divisors, whose sum is σ = 1222023614. Its totient is φ = 1222023612.

The previous prime is 1222023611. The next prime is 1222023623. The reversal of 1222023613 is 3163202221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 989857444 + 232166169 = 31462^2 + 15237^2 .

It is an emirp because it is prime and its reverse (3163202221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222023613 - 2¹ = 1222023611 is a prime.

Together with 1222023611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222023611) 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, 611011806 + 611011807.

It is an arithmetic number, because the mean of its divisors is an integer number (611011807).

Almost surely, 2^1222023613 is an apocalyptic number.

It is an amenable number.

1222023613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222023613 is an equidigital number, since it uses as much as digits as its factorization.

1222023613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1222023613 is about 34957.4543266526. The cubic root of 1222023613 is about 1069.1201935979.

Adding to 1222023613 its reverse (3163202221), we get a palindrome (4385225834).

The spelling of 1222023613 in words is "one billion, two hundred twenty-two million, twenty-three thousand, six hundred thirteen".