1222242071 has 2 divisors, whose sum is σ = 1222242072. Its totient is φ = 1222242070.

The previous prime is 1222242037. The next prime is 1222242121. The reversal of 1222242071 is 1702422221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222242071 - 2²² = 1218047767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222242871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611121035 + 611121036.

It is an arithmetic number, because the mean of its divisors is an integer number (611121036).

Almost surely, 2^1222242071 is an apocalyptic number.

1222242071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222242071 is an equidigital number, since it uses as much as digits as its factorization.

1222242071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 1222242071 is about 34960.5788138583. The cubic root of 1222242071 is about 1069.1838977524.

Adding to 1222242071 its reverse (1702422221), we get a palindrome (2924664292).

The spelling of 1222242071 in words is "one billion, two hundred twenty-two million, two hundred forty-two thousand, seventy-one".