200111121001220 has 144 divisors (see below), whose sum is σ = 496465859897280. Its totient is φ = 67163063385600.

The previous prime is 200111121001219. The next prime is 200111121001271. The reversal of 200111121001220 is 22100121111002.

It is a junction number, because it is equal to n+sod(n) for n = 200111121001195 and 200111121001204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 357354650 + ... + 357914190.

It is an arithmetic number, because the mean of its divisors is an integer number (3447679582620).

Almost surely, 2^{200111121001220} is an apocalyptic number.

200111121001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200111121001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248232929948640).

200111121001220 is an abundant number, since it is smaller than the sum of its proper divisors (296354738896060).

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

200111121001220 is a wasteful number, since it uses less digits than its factorization.

200111121001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569206 (or 569191 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200111121001220 its reverse (22100121111002), we get a palindrome (222211242112222).

The spelling of 200111121001220 in words is "two hundred trillion, one hundred eleven billion, one hundred twenty-one million, one thousand, two hundred twenty".