1222163461 has 2 divisors, whose sum is σ = 1222163462. Its totient is φ = 1222163460.

The previous prime is 1222163447. The next prime is 1222163471. The reversal of 1222163461 is 1643612221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 850830561 + 371332900 = 29169^2 + 19270^2 .

It is an emirp because it is prime and its reverse (1643612221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222163461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222163471) 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, 611081730 + 611081731.

It is an arithmetic number, because the mean of its divisors is an integer number (611081731).

Almost surely, 2^1222163461 is an apocalyptic number.

It is an amenable number.

1222163461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222163461 is an equidigital number, since it uses as much as digits as its factorization.

1222163461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 1222163461 is about 34959.4545294975. The cubic root of 1222163461 is about 1069.1609753024.

Adding to 1222163461 its reverse (1643612221), we get a palindrome (2865775682).

The spelling of 1222163461 in words is "one billion, two hundred twenty-two million, one hundred sixty-three thousand, four hundred sixty-one".