201331012220 has 24 divisors (see below), whose sum is σ = 455317828224. Its totient is φ = 74337604416.

The previous prime is 201331012219. The next prime is 201331012249. The reversal of 201331012220 is 22210133102.

201331012220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 387174764 + ... + 387175283.

It is an arithmetic number, because the mean of its divisors is an integer number (18971576176).

Almost surely, 2^201331012220 is an apocalyptic number.

201331012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201331012220 is an abundant number, since it is smaller than the sum of its proper divisors (253986816004).

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

201331012220 is a wasteful number, since it uses less digits than its factorization.

201331012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774350069 (or 774350067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201331012220 its reverse (22210133102), we get a palindrome (223541145322).

The spelling of 201331012220 in words is "two hundred one billion, three hundred thirty-one million, twelve thousand, two hundred twenty".