12200581 has 2 divisors, whose sum is σ = 12200582. Its totient is φ = 12200580.

The previous prime is 12200537. The next prime is 12200593. The reversal of 12200581 is 18500221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 2056356 = 3185^2 + 1434^2 .

It is an emirp because it is prime and its reverse (18500221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12200581 is a prime.

It is a super-2 number, since 2×12200581² = 297708353475122, 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 (12200521) 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, 6100290 + 6100291.

It is an arithmetic number, because the mean of its divisors is an integer number (6100291).

Almost surely, 2^12200581 is an apocalyptic number.

It is an amenable number.

12200581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200581 is an equidigital number, since it uses as much as digits as its factorization.

12200581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 12200581 is about 3492.9330082325. The cubic root of 12200581 is about 230.2114061291.

The spelling of 12200581 in words is "twelve million, two hundred thousand, five hundred eighty-one".