200121001002220 has 24 divisors (see below), whose sum is σ = 420254666697600. Its totient is φ = 80048292859392.

The previous prime is 200121001002203. The next prime is 200121001002257. The reversal of 200121001002220 is 22200100121002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 200121001002220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9491676 + ... + 22143484.

It is an arithmetic number, because the mean of its divisors is an integer number (17510611112400).

Almost surely, 2^{200121001002220} is an apocalyptic number.

200121001002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121001002220 is an abundant number, since it is smaller than the sum of its proper divisors (220133665695380).

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

200121001002220 is a wasteful number, since it uses less digits than its factorization.

200121001002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13442697 (or 13442695 counting only the distinct ones).

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

Adding to 200121001002220 its reverse (22200100121002), we get a palindrome (222321101123222).

The spelling of 200121001002220 in words is "two hundred trillion, one hundred twenty-one billion, one million, two thousand, two hundred twenty".