2250687221 has 2 divisors, whose sum is σ = 2250687222. Its totient is φ = 2250687220.

The previous prime is 2250687151. The next prime is 2250687227. The reversal of 2250687221 is 1227860522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2106351025 + 144336196 = 45895^2 + 12014^2 .

It is a cyclic number.

It is not a de Polignac number, because 2250687221 - 2¹⁰ = 2250686197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2250687227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125343610 + 1125343611.

It is an arithmetic number, because the mean of its divisors is an integer number (1125343611).

Almost surely, 2^2250687221 is an apocalyptic number.

It is an amenable number.

2250687221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2250687221 is an equidigital number, since it uses as much as digits as its factorization.

2250687221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 2250687221 is about 47441.4082948641. The cubic root of 2250687221 is about 1310.5040930444.

The spelling of 2250687221 in words is "two billion, two hundred fifty million, six hundred eighty-seven thousand, two hundred twenty-one".