200222222122121 has 2 divisors, whose sum is σ = 200222222122122. Its totient is φ = 200222222122120.

The previous prime is 200222222122093. The next prime is 200222222122129. The reversal of 200222222122121 is 121221222222002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173779888153600 + 26442333968521 = 13182560^2 + 5142211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200222222122121 is a prime.

It is not a weakly prime, because it can be changed into another prime (200222222122129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100111111061060 + 100111111061061.

It is an arithmetic number, because the mean of its divisors is an integer number (100111111061061).

Almost surely, 2^{200222222122121} is an apocalyptic number.

It is an amenable number.

200222222122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200222222122121 is an equidigital number, since it uses as much as digits as its factorization.

200222222122121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 200222222122121 its reverse (121221222222002), we get a palindrome (321443444344123).

The spelling of 200222222122121 in words is "two hundred trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".