201220301320 has 32 divisors (see below), whose sum is σ = 468357600600. Its totient is φ = 77712667648.

The previous prime is 201220301281. The next prime is 201220301357. The reversal of 201220301320 is 23103022102.

It can be written as a sum of positive squares in 4 ways, for example, as 183891738276 + 17328563044 = 428826^2 + 131638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201220301294 and 201220301303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86731729 + ... + 86734048.

Almost surely, 2^201220301320 is an apocalyptic number.

201220301320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220301320 is an abundant number, since it is smaller than the sum of its proper divisors (267137299280).

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

201220301320 is a wasteful number, since it uses less digits than its factorization.

201220301320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173465817 (or 173465813 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 201220301320 its reverse (23103022102), we get a palindrome (224323323422).

The spelling of 201220301320 in words is "two hundred one billion, two hundred twenty million, three hundred one thousand, three hundred twenty".