1122110981 has 2 divisors, whose sum is σ = 1122110982. Its totient is φ = 1122110980.

The previous prime is 1122110971. The next prime is 1122110989. The reversal of 1122110981 is 1890112211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106626756 + 15484225 = 33266^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122110981 - 2⁶ = 1122110917 is a prime.

It is a super-2 number, since 2×1122110981² = 2518266107361564722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122110981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122110989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561055490 + 561055491.

It is an arithmetic number, because the mean of its divisors is an integer number (561055491).

Almost surely, 2^1122110981 is an apocalyptic number.

It is an amenable number.

1122110981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122110981 is an equidigital number, since it uses as much as digits as its factorization.

1122110981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 26.

The square root of 1122110981 is about 33497.9250252907. The cubic root of 1122110981 is about 1039.1508666193.

The spelling of 1122110981 in words is "one billion, one hundred twenty-two million, one hundred ten thousand, nine hundred eighty-one".