200122021210121 has 2 divisors, whose sum is σ = 200122021210122. Its totient is φ = 200122021210120.

The previous prime is 200122021210109. The next prime is 200122021210123. The reversal of 200122021210121 is 121012120221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170928953040400 + 29193068169721 = 13073980^2 + 5403061^2 .

It is a cyclic number.

It is not a de Polignac number, because 200122021210121 - 2¹⁴ = 200122021193737 is a prime.

Together with 200122021210123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200122021210121.

It is not a weakly prime, because it can be changed into another prime (200122021210123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061010605060 + 100061010605061.

It is an arithmetic number, because the mean of its divisors is an integer number (100061010605061).

Almost surely, 2^{200122021210121} is an apocalyptic number.

It is an amenable number.

200122021210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200122021210121 is an equidigital number, since it uses as much as digits as its factorization.

200122021210121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200122021210121 its reverse (121012120221002), we get a palindrome (321134141431123).

The spelling of 200122021210121 in words is "two hundred trillion, one hundred twenty-two billion, twenty-one million, two hundred ten thousand, one hundred twenty-one".