2108666201 has 2 divisors, whose sum is σ = 2108666202. Its totient is φ = 2108666200.

The previous prime is 2108666173. The next prime is 2108666317. The reversal of 2108666201 is 1026668012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2043040000 + 65626201 = 45200^2 + 8101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108666201 - 2²⁶ = 2041557337 is a prime.

It is not a weakly prime, because it can be changed into another prime (2108666501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054333100 + 1054333101.

It is an arithmetic number, because the mean of its divisors is an integer number (1054333101).

Almost surely, 2^2108666201 is an apocalyptic number.

It is an amenable number.

2108666201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108666201 is an equidigital number, since it uses as much as digits as its factorization.

2108666201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2108666201 is about 45920.2156027168. The cubic root of 2108666201 is about 1282.3382960048.

The spelling of 2108666201 in words is "two billion, one hundred eight million, six hundred sixty-six thousand, two hundred one".