200022121973 has 2 divisors, whose sum is σ = 200022121974. Its totient is φ = 200022121972.

The previous prime is 200022121967. The next prime is 200022121991. The reversal of 200022121973 is 379121220002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173408114929 + 26614007044 = 416423^2 + 163138^2 .

It is a cyclic number.

It is not a de Polignac number, because 200022121973 - 2³⁰ = 198948380149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200012121973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100011060986 + 100011060987.

It is an arithmetic number, because the mean of its divisors is an integer number (100011060987).

Almost surely, 2^200022121973 is an apocalyptic number.

It is an amenable number.

200022121973 is a deficient number, since it is larger than the sum of its proper divisors (1).

200022121973 is an equidigital number, since it uses as much as digits as its factorization.

200022121973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 200022121973 its reverse (379121220002), we get a palindrome (579143341975).

The spelling of 200022121973 in words is "two hundred billion, twenty-two million, one hundred twenty-one thousand, nine hundred seventy-three".