2205505873321 has 2 divisors, whose sum is σ = 2205505873322. Its totient is φ = 2205505873320.

The previous prime is 2205505873301. The next prime is 2205505873349. The reversal of 2205505873321 is 1233785055022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1948648483600 + 256857389721 = 1395940^2 + 506811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205505873321 - 2⁵ = 2205505873289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2205505873301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102752936660 + 1102752936661.

It is an arithmetic number, because the mean of its divisors is an integer number (1102752936661).

Almost surely, 2^{2205505873321} is an apocalyptic number.

It is an amenable number.

2205505873321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205505873321 is an equidigital number, since it uses as much as digits as its factorization.

2205505873321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 2205505873321 in words is "two trillion, two hundred five billion, five hundred five million, eight hundred seventy-three thousand, three hundred twenty-one".