200120020019977 has 2 divisors, whose sum is σ = 200120020019978. Its totient is φ = 200120020019976.

The previous prime is 200120020019947. The next prime is 200120020019987. The reversal of 200120020019977 is 779910020021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176316198684921 + 23803821335056 = 13278411^2 + 4878916^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120020019977 - 2¹⁹ = 200120019495689 is a prime.

It is not a weakly prime, because it can be changed into another prime (200120020019947) 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, 100060010009988 + 100060010009989.

It is an arithmetic number, because the mean of its divisors is an integer number (100060010009989).

Almost surely, 2^{200120020019977} is an apocalyptic number.

It is an amenable number.

200120020019977 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120020019977 is an equidigital number, since it uses as much as digits as its factorization.

200120020019977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 200120020019977 in words is "two hundred trillion, one hundred twenty billion, twenty million, nineteen thousand, nine hundred seventy-seven".