1222211324461 has 2 divisors, whose sum is σ = 1222211324462. Its totient is φ = 1222211324460.

The previous prime is 1222211324449. The next prime is 1222211324491. The reversal of 1222211324461 is 1644231122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789272328100 + 432938996361 = 888410^2 + 657981^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222211324461 - 2¹⁷ = 1222211193389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222211324401) 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, 611105662230 + 611105662231.

It is an arithmetic number, because the mean of its divisors is an integer number (611105662231).

Almost surely, 2^{1222211324461} is an apocalyptic number.

It is an amenable number.

1222211324461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222211324461 is an equidigital number, since it uses as much as digits as its factorization.

1222211324461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

Adding to 1222211324461 its reverse (1644231122221), we get a palindrome (2866442446682).

The spelling of 1222211324461 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, three hundred twenty-four thousand, four hundred sixty-one".