201200111220 has 192 divisors, whose sum is σ = 602871413760. Its totient is φ = 49959272448.

The previous prime is 201200111207. The next prime is 201200111221. The reversal of 201200111220 is 22111002102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201200111196 and 201200111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200111221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 135305317 + ... + 135306803.

It is an arithmetic number, because the mean of its divisors is an integer number (3139955280).

Almost surely, 2^201200111220 is an apocalyptic number.

201200111220 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 201200111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301435706880).

201200111220 is an abundant number, since it is smaller than the sum of its proper divisors (401671302540).

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

201200111220 is a wasteful number, since it uses less digits than its factorization.

201200111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201200111220 its reverse (22111002102), we get a palindrome (223311113322).

The spelling of 201200111220 in words is "two hundred one billion, two hundred million, one hundred eleven thousand, two hundred twenty".