1122220087 has 2 divisors, whose sum is σ = 1122220088. Its totient is φ = 1122220086.

The previous prime is 1122220079. The next prime is 1122220093. The reversal of 1122220087 is 7800222211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1122220087 - 2³ = 1122220079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122220487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561110043 + 561110044.

It is an arithmetic number, because the mean of its divisors is an integer number (561110044).

Almost surely, 2^1122220087 is an apocalyptic number.

1122220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122220087 is an equidigital number, since it uses as much as digits as its factorization.

1122220087 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 25.

The square root of 1122220087 is about 33499.5535343383. The cubic root of 1122220087 is about 1039.1845453796.

Adding to 1122220087 its reverse (7800222211), we get a palindrome (8922442298).

The spelling of 1122220087 in words is "one billion, one hundred twenty-two million, two hundred twenty thousand, eighty-seven".