201221023001320 has 64 divisors (see below), whose sum is σ = 517471855891200. Its totient is φ = 68983882606080.

The previous prime is 201221023001267. The next prime is 201221023001353. The reversal of 201221023001320 is 23100320122102.

201221023001320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29069460 + ... + 35319619.

It is an arithmetic number, because the mean of its divisors is an integer number (8085497748300).

Almost surely, 2^{201221023001320} is an apocalyptic number.

201221023001320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201221023001320 is an abundant number, since it is smaller than the sum of its proper divisors (316250832889880).

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

201221023001320 is a wasteful number, since it uses less digits than its factorization.

201221023001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64400258 (or 64400254 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201221023001320 its reverse (23100320122102), we get a palindrome (224321343123422).

The spelling of 201221023001320 in words is "two hundred one trillion, two hundred twenty-one billion, twenty-three million, one thousand, three hundred twenty".