200121220120260 has 24 divisors (see below), whose sum is σ = 560339416336896. Its totient is φ = 53365658698720.

The previous prime is 200121220120259. The next prime is 200121220120279. The reversal of 200121220120260 is 62021022121002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667676834276 + ... + 1667676834395.

It is an arithmetic number, because the mean of its divisors is an integer number (23347475680704).

Almost surely, 2^{200121220120260} is an apocalyptic number.

200121220120260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121220120260 is an abundant number, since it is smaller than the sum of its proper divisors (360218196216636).

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

200121220120260 is a wasteful number, since it uses less digits than its factorization.

200121220120260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335353668683 (or 3335353668681 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 200121220120260 its reverse (62021022121002), we get a palindrome (262142242241262).

The spelling of 200121220120260 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, two hundred sixty".