20552225321 has 2 divisors, whose sum is σ = 20552225322. Its totient is φ = 20552225320.

The previous prime is 20552225303. The next prime is 20552225333. The reversal of 20552225321 is 12352225502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14504830096 + 6047395225 = 120436^2 + 77765^2 .

It is a cyclic number.

It is not a de Polignac number, because 20552225321 - 2¹⁸ = 20551963177 is a prime.

It is not a weakly prime, because it can be changed into another prime (20552225821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10276112660 + 10276112661.

It is an arithmetic number, because the mean of its divisors is an integer number (10276112661).

Almost surely, 2^20552225321 is an apocalyptic number.

It is an amenable number.

20552225321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20552225321 is an equidigital number, since it uses as much as digits as its factorization.

20552225321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20552225321 in words is "twenty billion, five hundred fifty-two million, two hundred twenty-five thousand, three hundred twenty-one".