1222264871 has 2 divisors, whose sum is σ = 1222264872. Its totient is φ = 1222264870.

The previous prime is 1222264867. The next prime is 1222264907. The reversal of 1222264871 is 1784622221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222264871 - 2² = 1222264867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222264801) 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, 611132435 + 611132436.

It is an arithmetic number, because the mean of its divisors is an integer number (611132436).

Almost surely, 2^1222264871 is an apocalyptic number.

1222264871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222264871 is an equidigital number, since it uses as much as digits as its factorization.

1222264871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The square root of 1222264871 is about 34960.9048938954. The cubic root of 1222264871 is about 1069.1905459829.

The spelling of 1222264871 in words is "one billion, two hundred twenty-two million, two hundred sixty-four thousand, eight hundred seventy-one".