11102102981 has 2 divisors, whose sum is σ = 11102102982. Its totient is φ = 11102102980.

The previous prime is 11102102953. The next prime is 11102102989. The reversal of 11102102981 is 18920120111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5890562500 + 5211540481 = 76750^2 + 72191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11102102981 is a prime.

It is a super-2 number, since 2×11102102981² (a number of 21 digits) 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 11102102981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102102989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551051490 + 5551051491.

It is an arithmetic number, because the mean of its divisors is an integer number (5551051491).

Almost surely, 2^11102102981 is an apocalyptic number.

It is an amenable number.

11102102981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102102981 is an equidigital number, since it uses as much as digits as its factorization.

11102102981 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 spelling of 11102102981 in words is "eleven billion, one hundred two million, one hundred two thousand, nine hundred eighty-one".