201233121320 has 64 divisors (see below), whose sum is σ = 564498115200. Its totient is φ = 62722010880.

The previous prime is 201233121301. The next prime is 201233121377. The reversal of 201233121320 is 23121332102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 201233121292 and 201233121301.

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, 32664635 + ... + 32670794.

It is an arithmetic number, because the mean of its divisors is an integer number (8820283050).

Almost surely, 2^201233121320 is an apocalyptic number.

201233121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201233121320 is an abundant number, since it is smaller than the sum of its proper divisors (363264993880).

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

201233121320 is a wasteful number, since it uses less digits than its factorization.

201233121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65335458 (or 65335454 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 201233121320 its reverse (23121332102), we get a palindrome (224354453422).

The spelling of 201233121320 in words is "two hundred one billion, two hundred thirty-three million, one hundred twenty-one thousand, three hundred twenty".