201220000 has 60 divisors (see below), whose sum is σ = 495080586. Its totient is φ = 80480000.

The previous prime is 201219917. The next prime is 201220043. The reversal of 201220000 is 22102.

It is a happy number.

201220000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 4210704 + 197009296 = 2052^2 + 14036^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14970 + ... + 25030.

Almost surely, 2^201220000 is an apocalyptic number.

201220000 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 201220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247540293).

201220000 is an abundant number, since it is smaller than the sum of its proper divisors (293860586).

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

201220000 is an equidigital number, since it uses as much as digits as its factorization.

201220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091 (or 10068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 201220000 is about 14185.2035586381. The cubic root of 201220000 is about 585.9902385123.

Adding to 201220000 its reverse (22102), we get a palindrome (201242102).

The spelling of 201220000 in words is "two hundred one million, two hundred twenty thousand".