201102021220 has 48 divisors (see below), whose sum is σ = 466597853568. Its totient is φ = 72417297920.

The previous prime is 201102021193. The next prime is 201102021229. The reversal of 201102021220 is 22120201102.

It is a happy number.

201102021220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201102021220.

It is not an unprimeable number, because it can be changed into a prime (201102021229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12850366 + ... + 12866005.

It is an arithmetic number, because the mean of its divisors is an integer number (9720788616).

Almost surely, 2^201102021220 is an apocalyptic number.

201102021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201102021220 is an abundant number, since it is smaller than the sum of its proper divisors (265495832348).

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

201102021220 is a wasteful number, since it uses less digits than its factorization.

201102021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25716420 (or 25716418 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201102021220 its reverse (22120201102), we get a palindrome (223222222322).

The spelling of 201102021220 in words is "two hundred one billion, one hundred two million, twenty-one thousand, two hundred twenty".