1222215971 has 2 divisors, whose sum is σ = 1222215972. Its totient is φ = 1222215970.

The previous prime is 1222215941. The next prime is 1222216001. The reversal of 1222215971 is 1795122221.

It is a balanced prime because it is at equal distance from previous prime (1222215941) and next prime (1222216001).

It is a cyclic number.

It is not a de Polignac number, because 1222215971 - 2²² = 1218021667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222215941) 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, 611107985 + 611107986.

It is an arithmetic number, because the mean of its divisors is an integer number (611107986).

Almost surely, 2^1222215971 is an apocalyptic number.

1222215971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222215971 is an equidigital number, since it uses as much as digits as its factorization.

1222215971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 1222215971 is about 34960.2055342928. The cubic root of 1222215971 is about 1069.1762871764.

The spelling of 1222215971 in words is "one billion, two hundred twenty-two million, two hundred fifteen thousand, nine hundred seventy-one".