200021222120122 has 12 divisors (see below), whose sum is σ = 324886541254830. Its totient is φ = 92317487132208.

The previous prime is 200021222120063. The next prime is 200021222120123. The reversal of 200021222120122 is 221021222120002.

It can be written as a sum of positive squares in 3 ways, for example, as 50575267033641 + 149445955086481 = 7111629^2 + 12224809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 200021222120122.

It is not an unprimeable number, because it can be changed into a prime (200021222120123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295889381497 + ... + 295889382172.

Almost surely, 2^{200021222120122} is an apocalyptic number.

200021222120122 is a deficient number, since it is larger than the sum of its proper divisors (124865319134708).

200021222120122 is a wasteful number, since it uses less digits than its factorization.

200021222120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591778763697 (or 591778763684 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 200021222120122 its reverse (221021222120002), we get a palindrome (421042444240124).

The spelling of 200021222120122 in words is "two hundred trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twenty-two".