220020101099977 has 2 divisors, whose sum is σ = 220020101099978. Its totient is φ = 220020101099976.

The previous prime is 220020101099963. The next prime is 220020101100013. The reversal of 220020101099977 is 779990101020022.

220020101099977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211136476447296 + 8883624652681 = 14530536^2 + 2980541^2 .

It is a cyclic number.

It is not a de Polignac number, because 220020101099977 - 2¹⁹ = 220020100575689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220020101099977.

It is not a weakly prime, because it can be changed into another prime (220020101099917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010050549988 + 110010050549989.

It is an arithmetic number, because the mean of its divisors is an integer number (110010050549989).

Almost surely, 2^{220020101099977} is an apocalyptic number.

It is an amenable number.

220020101099977 is a deficient number, since it is larger than the sum of its proper divisors (1).

220020101099977 is an equidigital number, since it uses as much as digits as its factorization.

220020101099977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 49.

The spelling of 220020101099977 in words is "two hundred twenty trillion, twenty billion, one hundred one million, ninety-nine thousand, nine hundred seventy-seven".