200021002101220 has 96 divisors (see below), whose sum is σ = 421093527845760. Its totient is φ = 79808866099200.

The previous prime is 200021002101187. The next prime is 200021002101257. The reversal of 200021002101220 is 22101200120002.

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 200021002101220.

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 31 ways as a sum of consecutive naturals, for example, 49375708195 + ... + 49375712245.

It is an arithmetic number, because the mean of its divisors is an integer number (4386390915060).

Almost surely, 2^{200021002101220} is an apocalyptic number.

200021002101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021002101220 is an abundant number, since it is smaller than the sum of its proper divisors (221072525744540).

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

200021002101220 is a wasteful number, since it uses less digits than its factorization.

200021002101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173 (or 8171 counting only the distinct ones).

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

Adding to 200021002101220 its reverse (22101200120002), we get a palindrome (222122202221222).

The spelling of 200021002101220 in words is "two hundred trillion, twenty-one billion, two million, one hundred one thousand, two hundred twenty".