36041221 has 2 divisors, whose sum is σ = 36041222. Its totient is φ = 36041220.

The previous prime is 36041209. The next prime is 36041249. The reversal of 36041221 is 12214063.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18610596 + 17430625 = 4314^2 + 4175^2 .

It is an emirp because it is prime and its reverse (12214063) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36041221 - 2⁹ = 36040709 is a prime.

It is a super-2 number, since 2×36041221² = 2597939222341682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36041261) 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, 18020610 + 18020611.

It is an arithmetic number, because the mean of its divisors is an integer number (18020611).

Almost surely, 2^36041221 is an apocalyptic number.

It is an amenable number.

36041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36041221 is an equidigital number, since it uses as much as digits as its factorization.

36041221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 36041221 is about 6003.4341005794. The cubic root of 36041221 is about 330.3187034327.

Adding to 36041221 its reverse (12214063), we get a palindrome (48255284).

The spelling of 36041221 in words is "thirty-six million, forty-one thousand, two hundred twenty-one".