1102181 has 2 divisors, whose sum is σ = 1102182. Its totient is φ = 1102180.

The previous prime is 1102169. The next prime is 1102187. The reversal of 1102181 is 1812011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 84100 = 1009^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102181 - 2⁶ = 1102117 is a prime.

It is a super-4 number, since 4×1102181⁴ (a number of 25 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551090 + 551091.

It is an arithmetic number, because the mean of its divisors is an integer number (551091).

2^1102181 is an apocalyptic number.

It is an amenable number.

1102181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102181 is an equidigital number, since it uses as much as digits as its factorization.

1102181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1102181 is about 1049.8480842484. The cubic root of 1102181 is about 103.2961908364.

Adding to 1102181 its reverse (1812011), we get a palindrome (2914192).

The spelling of 1102181 in words is "one million, one hundred two thousand, one hundred eighty-one".