2302566440221 has 2 divisors, whose sum is σ = 2302566440222. Its totient is φ = 2302566440220.

The previous prime is 2302566440219. The next prime is 2302566440233. The reversal of 2302566440221 is 1220446652032.

2302566440221 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., 1993775064121 + 308791376100 = 1412011^2 + 555690^2 .

It is a cyclic number.

It is not a de Polignac number, because 2302566440221 - 2¹ = 2302566440219 is a prime.

Together with 2302566440219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2302566441221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151283220110 + 1151283220111.

It is an arithmetic number, because the mean of its divisors is an integer number (1151283220111).

Almost surely, 2^{2302566440221} is an apocalyptic number.

It is an amenable number.

2302566440221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2302566440221 is an equidigital number, since it uses as much as digits as its factorization.

2302566440221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 2302566440221 in words is "two trillion, three hundred two billion, five hundred sixty-six million, four hundred forty thousand, two hundred twenty-one".