1102112981 has 2 divisors, whose sum is σ = 1102112982. Its totient is φ = 1102112980.

The previous prime is 1102112971. The next prime is 1102112987. The reversal of 1102112981 is 1892112011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 976000081 + 126112900 = 31241^2 + 11230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102112981 - 2¹⁸ = 1101850837 is a prime.

It is a super-2 number, since 2×1102112981² = 2429306045777412722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1102112981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102112987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551056490 + 551056491.

It is an arithmetic number, because the mean of its divisors is an integer number (551056491).

Almost surely, 2^1102112981 is an apocalyptic number.

It is an amenable number.

1102112981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102112981 is an equidigital number, since it uses as much as digits as its factorization.

1102112981 is an evil number, because the sum of its binary digits is even.

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

The square root of 1102112981 is about 33198.0870081395. The cubic root of 1102112981 is about 1032.9406588352.

Adding to 1102112981 its reverse (1892112011), we get a palindrome (2994224992).

The spelling of 1102112981 in words is "one billion, one hundred two million, one hundred twelve thousand, nine hundred eighty-one".