200121121112010 has 48 divisors (see below), whose sum is σ = 558705497312736. Its totient is φ = 45741970539552.

The previous prime is 200121121111997. The next prime is 200121121112027. The reversal of 200121121112010 is 10211121121002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68068407072 + ... + 68068410011.

It is an arithmetic number, because the mean of its divisors is an integer number (11639697860682).

Almost surely, 2^{200121121112010} is an apocalyptic number.

200121121112010 is an abundant number, since it is smaller than the sum of its proper divisors (358584376200726).

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

200121121112010 is a wasteful number, since it uses less digits than its factorization.

200121121112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136136817107 (or 136136817100 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 200121121112010 its reverse (10211121121002), we get a palindrome (210332242233012).

The spelling of 200121121112010 in words is "two hundred trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, ten".