200121012021089 has 2 divisors, whose sum is σ = 200121012021090. Its totient is φ = 200121012021088.

The previous prime is 200121012021031. The next prime is 200121012021103. The reversal of 200121012021089 is 980120210121002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181948184059489 + 18172827961600 = 13488817^2 + 4262960^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121012021089 - 2³² = 200116717053793 is a prime.

It is not a weakly prime, because it can be changed into another prime (200121012021989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060506010544 + 100060506010545.

It is an arithmetic number, because the mean of its divisors is an integer number (100060506010545).

Almost surely, 2^{200121012021089} is an apocalyptic number.

It is an amenable number.

200121012021089 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121012021089 is an equidigital number, since it uses as much as digits as its factorization.

200121012021089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 200121012021089 in words is "two hundred trillion, one hundred twenty-one billion, twelve million, twenty-one thousand, eighty-nine".