200121212212122 has 8 divisors (see below), whose sum is σ = 400242424424256. Its totient is φ = 66707070737372.

The previous prime is 200121212212099. The next prime is 200121212212123. The reversal of 200121212212122 is 221212212121002.

It is a sphenic number, since it is the product of 3 distinct primes.

200121212212122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (200121212212123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16676767684338 + ... + 16676767684349.

It is an arithmetic number, because the mean of its divisors is an integer number (50030303053032).

Almost surely, 2^{200121212212122} is an apocalyptic number.

200121212212122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200121212212122 is a wasteful number, since it uses less digits than its factorization.

200121212212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33353535368692.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 200121212212122 its reverse (221212212121002), we get a palindrome (421333424333124).

The spelling of 200121212212122 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-two".