1222201613 has 2 divisors, whose sum is σ = 1222201614. Its totient is φ = 1222201612.

The previous prime is 1222201537. The next prime is 1222201627. The reversal of 1222201613 is 3161022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221991849 + 209764 = 34957^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222201613 - 2¹⁰ = 1222200589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222201633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611100806 + 611100807.

It is an arithmetic number, because the mean of its divisors is an integer number (611100807).

Almost surely, 2^1222201613 is an apocalyptic number.

It is an amenable number.

1222201613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222201613 is an equidigital number, since it uses as much as digits as its factorization.

1222201613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1222201613 is about 34960.0001859268. Note that the first 3 decimals coincide. The cubic root of 1222201613 is about 1069.1721004387.

Adding to 1222201613 its reverse (3161022221), we get a palindrome (4383223834).

The spelling of 1222201613 in words is "one billion, two hundred twenty-two million, two hundred one thousand, six hundred thirteen".