201201320220 has 48 divisors (see below), whose sum is σ = 563910294528. Its totient is φ = 53601628480.

The previous prime is 201201320207. The next prime is 201201320227. The reversal of 201201320220 is 22023102102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201201320220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201320227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564404 + ... + 1688123.

It is an arithmetic number, because the mean of its divisors is an integer number (11748131136).

Almost surely, 2^201201320220 is an apocalyptic number.

201201320220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201201320220 is an abundant number, since it is smaller than the sum of its proper divisors (362708974308).

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

201201320220 is a wasteful number, since it uses less digits than its factorization.

201201320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253570 (or 3253568 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 201201320220 its reverse (22023102102), we get a palindrome (223224422322).

The spelling of 201201320220 in words is "two hundred one billion, two hundred one million, three hundred twenty thousand, two hundred twenty".