45520232221 has 2 divisors, whose sum is σ = 45520232222. Its totient is φ = 45520232220.

The previous prime is 45520232203. The next prime is 45520232231. The reversal of 45520232221 is 12223202554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36985059225 + 8535172996 = 192315^2 + 92386^2 .

It is a cyclic number.

It is not a de Polignac number, because 45520232221 - 2²⁷ = 45386014493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45520232221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45520232231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22760116110 + 22760116111.

It is an arithmetic number, because the mean of its divisors is an integer number (22760116111).

Almost surely, 2^45520232221 is an apocalyptic number.

It is an amenable number.

45520232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45520232221 is an equidigital number, since it uses as much as digits as its factorization.

45520232221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 45520232221 its reverse (12223202554), we get a palindrome (57743434775).

The spelling of 45520232221 in words is "forty-five billion, five hundred twenty million, two hundred thirty-two thousand, two hundred twenty-one".