201001133220 has 96 divisors (see below), whose sum is σ = 580102537728. Its totient is φ = 51963213312.

The previous prime is 201001133219. The next prime is 201001133233. The reversal of 201001133220 is 22331100102.

201001133220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201001133220.

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 31 ways as a sum of consecutive naturals, for example, 451509 + ... + 778371.

It is an arithmetic number, because the mean of its divisors is an integer number (6042734768).

Almost surely, 2^201001133220 is an apocalyptic number.

201001133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201001133220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290051268864).

201001133220 is an abundant number, since it is smaller than the sum of its proper divisors (379101404508).

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

201001133220 is a wasteful number, since it uses less digits than its factorization.

201001133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327189 (or 327187 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 201001133220 its reverse (22331100102), we get a palindrome (223332233322).

It can be divided in two parts, 2010011 and 33220, that added together give a triangular number (2043231 = T₂₀₂₁).

The spelling of 201001133220 in words is "two hundred one billion, one million, one hundred thirty-three thousand, two hundred twenty".