200221012221973 has 2 divisors, whose sum is σ = 200221012221974. Its totient is φ = 200221012221972.

The previous prime is 200221012221949. The next prime is 200221012222003. The reversal of 200221012221973 is 379122210122002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108369911347569 + 91851100874404 = 10410087^2 + 9583898^2 .

It is a cyclic number.

It is not a de Polignac number, because 200221012221973 - 2⁵ = 200221012221941 is a prime.

It is a super-2 number, since 2×200221012221973² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200221012261973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110506110986 + 100110506110987.

It is an arithmetic number, because the mean of its divisors is an integer number (100110506110987).

Almost surely, 2^{200221012221973} is an apocalyptic number.

It is an amenable number.

200221012221973 is a deficient number, since it is larger than the sum of its proper divisors (1).

200221012221973 is an equidigital number, since it uses as much as digits as its factorization.

200221012221973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 200221012221973 its reverse (379122210122002), we get a palindrome (579343222343975).

The spelling of 200221012221973 in words is "two hundred trillion, two hundred twenty-one billion, twelve million, two hundred twenty-one thousand, nine hundred seventy-three".