220120201177 has 2 divisors, whose sum is σ = 220120201178. Its totient is φ = 220120201176.

The previous prime is 220120201151. The next prime is 220120201253. The reversal of 220120201177 is 771102021022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216579475161 + 3540726016 = 465381^2 + 59504^2 .

It is a cyclic number.

It is not a de Polignac number, because 220120201177 - 2¹¹ = 220120199129 is a prime.

It is not a weakly prime, because it can be changed into another prime (220120208177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060100588 + 110060100589.

It is an arithmetic number, because the mean of its divisors is an integer number (110060100589).

Almost surely, 2^220120201177 is an apocalyptic number.

It is an amenable number.

220120201177 is a deficient number, since it is larger than the sum of its proper divisors (1).

220120201177 is an equidigital number, since it uses as much as digits as its factorization.

220120201177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 220120201177 its reverse (771102021022), we get a palindrome (991222222199).

The spelling of 220120201177 in words is "two hundred twenty billion, one hundred twenty million, two hundred one thousand, one hundred seventy-seven".