67221241 has 2 divisors, whose sum is σ = 67221242. Its totient is φ = 67221240.

The previous prime is 67221229. The next prime is 67221251. The reversal of 67221241 is 14212276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 24710841 = 6520^2 + 4971^2 .

It is a cyclic number.

It is not a de Polignac number, because 67221241 - 2¹⁹ = 66696953 is a prime.

It is not a weakly prime, because it can be changed into another prime (67221211) 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, 33610620 + 33610621.

It is an arithmetic number, because the mean of its divisors is an integer number (33610621).

Almost surely, 2^67221241 is an apocalyptic number.

It is an amenable number.

67221241 is a deficient number, since it is larger than the sum of its proper divisors (1).

67221241 is an equidigital number, since it uses as much as digits as its factorization.

67221241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 67221241 is about 8198.8560787466. The cubic root of 67221241 is about 406.6013740766.

It can be divided in two parts, 67221 and 241, that multiplied together give a palindrome (16200261).

The spelling of 67221241 in words is "sixty-seven million, two hundred twenty-one thousand, two hundred forty-one".