201335220 has 96 divisors (see below), whose sum is σ = 634247040. Its totient is φ = 53677728.

The previous prime is 201335219. The next prime is 201335231. The reversal of 201335220 is 22533102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201335193 and 201335202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41439 + ... + 46041.

It is an arithmetic number, because the mean of its divisors is an integer number (6606740).

Almost surely, 2^201335220 is an apocalyptic number.

201335220 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 201335220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317123520).

201335220 is an abundant number, since it is smaller than the sum of its proper divisors (432911820).

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

201335220 is an equidigital number, since it uses as much as digits as its factorization.

201335220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633 (or 4613 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 201335220 is about 14189.2642515389. The cubic root of 201335220 is about 586.1020645606.

Adding to 201335220 its reverse (22533102), we get a palindrome (223868322).

The spelling of 201335220 in words is "two hundred one million, three hundred thirty-five thousand, two hundred twenty".