2001244220 has 12 divisors (see below), whose sum is σ = 4202612904. Its totient is φ = 800497680.

The previous prime is 2001244183. The next prime is 2001244243. The reversal of 2001244220 is 224421002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50031086 + ... + 50031125.

It is an arithmetic number, because the mean of its divisors is an integer number (350217742).

Almost surely, 2^2001244220 is an apocalyptic number.

2001244220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001244220 is an abundant number, since it is smaller than the sum of its proper divisors (2201368684).

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

2001244220 is a wasteful number, since it uses less digits than its factorization.

2001244220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100062220 (or 100062218 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2001244220 is about 44735.2681896510. The cubic root of 2001244220 is about 1260.1822655622.

Adding to 2001244220 its reverse (224421002), we get a palindrome (2225665222).

The spelling of 2001244220 in words is "two billion, one million, two hundred forty-four thousand, two hundred twenty".