201002321220 has 192 divisors, whose sum is σ = 581386122240. Its totient is φ = 51864883200.

The previous prime is 201002321207. The next prime is 201002321243. The reversal of 201002321220 is 22123200102.

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 201002321220.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90499710 + ... + 90501930.

It is an arithmetic number, because the mean of its divisors is an integer number (3028052720).

Almost surely, 2^201002321220 is an apocalyptic number.

201002321220 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 201002321220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290693061120).

201002321220 is an abundant number, since it is smaller than the sum of its proper divisors (380383801020).

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

201002321220 is a wasteful number, since it uses less digits than its factorization.

201002321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686 (or 2684 counting only the distinct ones).

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

Adding to 201002321220 its reverse (22123200102), we get a palindrome (223125521322).

The spelling of 201002321220 in words is "two hundred one billion, two million, three hundred twenty-one thousand, two hundred twenty".