200121221101290 has 128 divisors (see below), whose sum is σ = 509707973617920. Its totient is φ = 50111503257600.

The previous prime is 200121221101289. The next prime is 200121221101301. The reversal of 200121221101290 is 92101122121002.

200121221101290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 200121221101290.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2137338196 + ... + 2137431824.

It is an arithmetic number, because the mean of its divisors is an integer number (3982093543890).

Almost surely, 2^{200121221101290} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200121221101290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254853986808960).

200121221101290 is an abundant number, since it is smaller than the sum of its proper divisors (309586752516630).

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

200121221101290 is a wasteful number, since it uses less digits than its factorization.

200121221101290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103208.

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 200121221101290 its reverse (92101122121002), we get a palindrome (292222343222292).

The spelling of 200121221101290 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, two hundred ninety".