200121110210 has 64 divisors (see below), whose sum is σ = 420577920000. Its totient is φ = 68531512896.

The previous prime is 200121110141. The next prime is 200121110243. The reversal of 200121110210 is 12011121002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200121110191 and 200121110200.

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, 2891591 + ... + 2959989.

It is an arithmetic number, because the mean of its divisors is an integer number (6571530000).

Almost surely, 2^200121110210 is an apocalyptic number.

200121110210 is an abundant number, since it is smaller than the sum of its proper divisors (220456809790).

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

200121110210 is an equidigital number, since it uses as much as digits as its factorization.

200121110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69280 (or 69266 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 200121110210 its reverse (12011121002), we get a palindrome (212132231212).

The spelling of 200121110210 in words is "two hundred billion, one hundred twenty-one million, one hundred ten thousand, two hundred ten".