2180221297 has 2 divisors, whose sum is σ = 2180221298. Its totient is φ = 2180221296.

The previous prime is 2180221283. The next prime is 2180221301. The reversal of 2180221297 is 7921220812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1917651681 + 262569616 = 43791^2 + 16204^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180221297 - 2¹⁵ = 2180188529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2180221237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090110648 + 1090110649.

It is an arithmetic number, because the mean of its divisors is an integer number (1090110649).

Almost surely, 2^2180221297 is an apocalyptic number.

It is an amenable number.

2180221297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180221297 is an equidigital number, since it uses as much as digits as its factorization.

2180221297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2180221297 is about 46692.8398900731. The cubic root of 2180221297 is about 1296.6821304371.

The spelling of 2180221297 in words is "two billion, one hundred eighty million, two hundred twenty-one thousand, two hundred ninety-seven".