200121220210120 has 128 divisors (see below), whose sum is σ = 491432284362240. Its totient is φ = 72737931248640.

The previous prime is 200121220210103. The next prime is 200121220210151. The reversal of 200121220210120 is 21012022121002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 200121220210094 and 200121220210103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14328139377 + ... + 14328153343.

It is an arithmetic number, because the mean of its divisors is an integer number (3839314721580).

Almost surely, 2^{200121220210120} is an apocalyptic number.

200121220210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121220210120 is an abundant number, since it is smaller than the sum of its proper divisors (291311064152120).

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

200121220210120 is a wasteful number, since it uses less digits than its factorization.

200121220210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26615 (or 26611 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200121220210120 its reverse (21012022121002), we get a palindrome (221133242331122).

The spelling of 200121220210120 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, one hundred twenty".