102181106 has 4 divisors (see below), whose sum is σ = 153271662. Its totient is φ = 51090552.

The previous prime is 102181103. The next prime is 102181109. The reversal of 102181106 is 601181201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601181201 = 83 ⋅7243147.

It is an interprime number because it is at equal distance from previous prime (102181103) and next prime (102181109).

It can be written as a sum of positive squares in only one way, i.e., 93915481 + 8265625 = 9691^2 + 2875^2 .

It is not an unprimeable number, because it can be changed into a prime (102181103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25545275 + ... + 25545278.

Almost surely, 2^102181106 is an apocalyptic number.

102181106 is a deficient number, since it is larger than the sum of its proper divisors (51090556).

102181106 is an equidigital number, since it uses as much as digits as its factorization.

102181106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51090555.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 102181106 is about 10108.4670450074. The cubic root of 102181106 is about 467.5092409547.

The spelling of 102181106 in words is "one hundred two million, one hundred eighty-one thousand, one hundred six".