200111221220 has 24 divisors (see below), whose sum is σ = 424394297208. Its totient is φ = 79251968000.

The previous prime is 200111221201. The next prime is 200111221229. The reversal of 200111221220 is 22122111002.

It can be written as a sum of positive squares in 4 ways, for example, as 83951585536 + 116159635684 = 289744^2 + 340822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200111221195 and 200111221204.

It is not an unprimeable number, because it can be changed into a prime (200111221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49530461 + ... + 49534500.

It is an arithmetic number, because the mean of its divisors is an integer number (17683095717).

Almost surely, 2^200111221220 is an apocalyptic number.

200111221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200111221220 is an abundant number, since it is smaller than the sum of its proper divisors (224283075988).

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

200111221220 is a wasteful number, since it uses less digits than its factorization.

200111221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99065071 (or 99065069 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200111221220 its reverse (22122111002), we get a palindrome (222233332222).

The spelling of 200111221220 in words is "two hundred billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty".