220131130310209 has 2 divisors, whose sum is σ = 220131130310210. Its totient is φ = 220131130310208.

The previous prime is 220131130310191. The next prime is 220131130310237. The reversal of 220131130310209 is 902013031131022.

It is an a-pointer prime, because the next prime (220131130310237) can be obtained adding 220131130310209 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151845780695184 + 68285349615025 = 12322572^2 + 8263495^2 .

It is a cyclic number.

It is not a de Polignac number, because 220131130310209 - 2⁹ = 220131130309697 is a prime.

It is not a weakly prime, because it can be changed into another prime (220131130310249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065565155104 + 110065565155105.

It is an arithmetic number, because the mean of its divisors is an integer number (110065565155105).

Almost surely, 2^{220131130310209} is an apocalyptic number.

It is an amenable number.

220131130310209 is a deficient number, since it is larger than the sum of its proper divisors (1).

220131130310209 is an equidigital number, since it uses as much as digits as its factorization.

220131130310209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 220131130310209 in words is "two hundred twenty trillion, one hundred thirty-one billion, one hundred thirty million, three hundred ten thousand, two hundred nine".