2966221 has 2 divisors, whose sum is σ = 2966222. Its totient is φ = 2966220.

The previous prime is 2966219. The next prime is 2966231. The reversal of 2966221 is 1226692.

2966221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1988100 + 978121 = 1410^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 2966221 - 2¹ = 2966219 is a prime.

Together with 2966219, it forms a pair of twin primes.

It is an Ulam number.

2966221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2966221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2966231) 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, 1483110 + 1483111.

It is an arithmetic number, because the mean of its divisors is an integer number (1483111).

2^2966221 is an apocalyptic number.

It is an amenable number.

2966221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2966221 is an equidigital number, since it uses as much as digits as its factorization.

2966221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 2966221 is about 1722.2720458743. The cubic root of 2966221 is about 143.6816042617.

The spelling of 2966221 in words is "two million, nine hundred sixty-six thousand, two hundred twenty-one".