11102981 has 2 divisors, whose sum is σ = 11102982. Its totient is φ = 11102980.

The previous prime is 11102977. The next prime is 11103013. The reversal of 11102981 is 18920111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 3094081 = 2830^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102981 - 2² = 11102977 is a prime.

It is a super-2 number, since 2×11102981² = 246552374172722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102941) 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, 5551490 + 5551491.

It is an arithmetic number, because the mean of its divisors is an integer number (5551491).

Almost surely, 2^11102981 is an apocalyptic number.

It is an amenable number.

11102981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102981 is an equidigital number, since it uses as much as digits as its factorization.

11102981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11102981 is about 3332.1135935019. The cubic root of 11102981 is about 223.0898777714.

The spelling of 11102981 in words is "eleven million, one hundred two thousand, nine hundred eighty-one".