12150181 has 2 divisors, whose sum is σ = 12150182. Its totient is φ = 12150180.

The previous prime is 12150179. The next prime is 12150211. The reversal of 12150181 is 18105121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8946081 + 3204100 = 2991^2 + 1790^2 .

It is an emirp because it is prime and its reverse (18105121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12150181 - 2¹ = 12150179 is a prime.

It is a super-2 number, since 2×12150181² = 295253796665522, which contains 22 as substring.

Together with 12150179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12159181) 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, 6075090 + 6075091.

It is an arithmetic number, because the mean of its divisors is an integer number (6075091).

Almost surely, 2^12150181 is an apocalyptic number.

It is an amenable number.

12150181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12150181 is an equidigital number, since it uses as much as digits as its factorization.

12150181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 12150181 is about 3485.7109748228. The cubic root of 12150181 is about 229.8939712927.

The spelling of 12150181 in words is "twelve million, one hundred fifty thousand, one hundred eighty-one".