1222077697 has 2 divisors, whose sum is σ = 1222077698. Its totient is φ = 1222077696.

The previous prime is 1222077677. The next prime is 1222077707. The reversal of 1222077697 is 7967702221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106493696 + 115584001 = 33264^2 + 10751^2 .

It is an emirp because it is prime and its reverse (7967702221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222077697 - 2⁷ = 1222077569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222077617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611038848 + 611038849.

It is an arithmetic number, because the mean of its divisors is an integer number (611038849).

Almost surely, 2^1222077697 is an apocalyptic number.

It is an amenable number.

1222077697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222077697 is an equidigital number, since it uses as much as digits as its factorization.

1222077697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 1222077697 is about 34958.2278870082. The cubic root of 1222077697 is about 1069.1359656454.

The spelling of 1222077697 in words is "one billion, two hundred twenty-two million, seventy-seven thousand, six hundred ninety-seven".