102247181 has 2 divisors, whose sum is σ = 102247182. Its totient is φ = 102247180.

The previous prime is 102247147. The next prime is 102247183. The reversal of 102247181 is 181742201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90060100 + 12187081 = 9490^2 + 3491^2 .

It is a cyclic number.

It is not a de Polignac number, because 102247181 - 2¹⁴ = 102230797 is a prime.

It is a super-2 number, since 2×102247181² = 20908972044893522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 102247183, it forms a pair of twin primes.

It is a Chen 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 102247181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102247183) 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, 51123590 + 51123591.

It is an arithmetic number, because the mean of its divisors is an integer number (51123591).

Almost surely, 2^102247181 is an apocalyptic number.

It is an amenable number.

102247181 is a deficient number, since it is larger than the sum of its proper divisors (1).

102247181 is an equidigital number, since it uses as much as digits as its factorization.

102247181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 102247181 is about 10111.7348165387. The cubic root of 102247181 is about 467.6099902297.

Adding to 102247181 its reverse (181742201), we get a palindrome (283989382).

The spelling of 102247181 in words is "one hundred two million, two hundred forty-seven thousand, one hundred eighty-one".