1222220071 has 2 divisors, whose sum is σ = 1222220072. Its totient is φ = 1222220070.

The previous prime is 1222220063. The next prime is 1222220081. The reversal of 1222220071 is 1700222221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222220071 - 2³ = 1222220063 is a prime.

It is a super-3 number, since 3×1222220071³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222220081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611110035 + 611110036.

It is an arithmetic number, because the mean of its divisors is an integer number (611110036).

Almost surely, 2^1222220071 is an apocalyptic number.

1222220071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222220071 is an equidigital number, since it uses as much as digits as its factorization.

1222220071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1222220071 is about 34960.2641723429. The cubic root of 1222220071 is about 1069.1774827147.

Adding to 1222220071 its reverse (1700222221), we get a palindrome (2922442292).

The spelling of 1222220071 in words is "one billion, two hundred twenty-two million, two hundred twenty thousand, seventy-one".