200000122120121 has 2 divisors, whose sum is σ = 200000122120122. Its totient is φ = 200000122120120.

The previous prime is 200000122120111. The next prime is 200000122120129. The reversal of 200000122120121 is 121021221000002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101728687012096 + 98271435108025 = 10086064^2 + 9913195^2 .

It is a cyclic number.

It is not a de Polignac number, because 200000122120121 - 2¹⁴ = 200000122103737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200000122120096 and 200000122120105.

It is not a weakly prime, because it can be changed into another prime (200000122120129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000061060060 + 100000061060061.

It is an arithmetic number, because the mean of its divisors is an integer number (100000061060061).

Almost surely, 2^{200000122120121} is an apocalyptic number.

It is an amenable number.

200000122120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200000122120121 is an equidigital number, since it uses as much as digits as its factorization.

200000122120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200000122120121 its reverse (121021221000002), we get a palindrome (321021343120123).

The spelling of 200000122120121 in words is "two hundred trillion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".