220531500481 has 2 divisors, whose sum is σ = 220531500482. Its totient is φ = 220531500480.

The previous prime is 220531500443. The next prime is 220531500509. The reversal of 220531500481 is 184005135022.

220531500481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217696896400 + 2834604081 = 466580^2 + 53241^2 .

It is a cyclic number.

It is not a de Polignac number, because 220531500481 - 2¹³ = 220531492289 is a prime.

It is a super-2 number, since 2×220531500481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220531500421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110265750240 + 110265750241.

It is an arithmetic number, because the mean of its divisors is an integer number (110265750241).

Almost surely, 2^220531500481 is an apocalyptic number.

It is an amenable number.

220531500481 is a deficient number, since it is larger than the sum of its proper divisors (1).

220531500481 is an equidigital number, since it uses as much as digits as its factorization.

220531500481 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 31.

The spelling of 220531500481 in words is "two hundred twenty billion, five hundred thirty-one million, five hundred thousand, four hundred eighty-one".