1222246681 has 2 divisors, whose sum is σ = 1222246682. Its totient is φ = 1222246680.

The previous prime is 1222246667. The next prime is 1222246693. The reversal of 1222246681 is 1866422221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1175392656 + 46854025 = 34284^2 + 6845^2 .

It is an emirp because it is prime and its reverse (1866422221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222246681 - 2²⁵ = 1188692249 is a prime.

It is a super-2 number, since 2×1222246681² = 2987773898431031522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222246631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611123340 + 611123341.

It is an arithmetic number, because the mean of its divisors is an integer number (611123341).

Almost surely, 2^1222246681 is an apocalyptic number.

It is an amenable number.

1222246681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222246681 is an equidigital number, since it uses as much as digits as its factorization.

1222246681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 1222246681 is about 34960.6447451989. The cubic root of 1222246681 is about 1069.1852419846.

The spelling of 1222246681 in words is "one billion, two hundred twenty-two million, two hundred forty-six thousand, six hundred eighty-one".