2121200012200 has 48 divisors (see below), whose sum is σ = 4964450960160. Its totient is φ = 842860920000.

The previous prime is 2121200012189. The next prime is 2121200012207. The reversal of 2121200012200 is 22100021212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2121200012207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35089006 + ... + 35149405.

It is an arithmetic number, because the mean of its divisors is an integer number (103426061670).

Almost surely, 2^{2121200012200} is an apocalyptic number.

2121200012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121200012200 is an abundant number, since it is smaller than the sum of its proper divisors (2843250947960).

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

2121200012200 is a wasteful number, since it uses less digits than its factorization.

2121200012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70238578 (or 70238569 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2121200012200 its reverse (22100021212), we get a palindrome (2143300033412).

The spelling of 2121200012200 in words is "two trillion, one hundred twenty-one billion, two hundred million, twelve thousand, two hundred".