2205320521 has 2 divisors, whose sum is σ = 2205320522. Its totient is φ = 2205320520.

The previous prime is 2205320479. The next prime is 2205320531. The reversal of 2205320521 is 1250235022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1730560000 + 474760521 = 41600^2 + 21789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205320521 - 2¹¹ = 2205318473 is a prime.

It is a super-2 number, since 2×2205320521² = 9726877200687422882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2205320492 and 2205320501.

It is not a weakly prime, because it can be changed into another prime (2205320531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102660260 + 1102660261.

It is an arithmetic number, because the mean of its divisors is an integer number (1102660261).

Almost surely, 2^2205320521 is an apocalyptic number.

It is an amenable number.

2205320521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205320521 is an equidigital number, since it uses as much as digits as its factorization.

2205320521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2205320521 is about 46960.8402927375. The cubic root of 2205320521 is about 1301.6390609793.

Adding to 2205320521 its reverse (1250235022), we get a palindrome (3455555543).

The spelling of 2205320521 in words is "two billion, two hundred five million, three hundred twenty thousand, five hundred twenty-one".