10012181 has 2 divisors, whose sum is σ = 10012182. Its totient is φ = 10012180.

The previous prime is 10012157. The next prime is 10012193. The reversal of 10012181 is 18121001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6421156 + 3591025 = 2534^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012181 - 2⁶ = 10012117 is a prime.

It is a super-2 number, since 2×10012181² = 200487536753522, 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 (10012111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006090 + 5006091.

It is an arithmetic number, because the mean of its divisors is an integer number (5006091).

Almost surely, 2^10012181 is an apocalyptic number.

It is an amenable number.

10012181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012181 is an equidigital number, since it uses as much as digits as its factorization.

10012181 is an evil number, because the sum of its binary digits is even.

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

The square root of 10012181 is about 3164.2030592236. The cubic root of 10012181 is about 215.5309107384.

Adding to 10012181 its reverse (18121001), we get a palindrome (28133182).

The spelling of 10012181 in words is "ten million, twelve thousand, one hundred eighty-one".