2003101220 has 24 divisors (see below), whose sum is σ = 4427908800. Its totient is φ = 759069792.

The previous prime is 2003101193. The next prime is 2003101229. The reversal of 2003101220 is 221013002.

2003101220 = 4026² + 4027² + ... + 4145².

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2003101229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635280 + ... + 2636039.

It is an arithmetic number, because the mean of its divisors is an integer number (184496200).

Almost surely, 2^2003101220 is an apocalyptic number.

2003101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003101220 is an abundant number, since it is smaller than the sum of its proper divisors (2424807580).

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

2003101220 is a wasteful number, since it uses less digits than its factorization.

2003101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271347 (or 5271345 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2003101220 is about 44756.0188131161. The cubic root of 2003101220 is about 1260.5719289839.

Adding to 2003101220 its reverse (221013002), we get a palindrome (2224114222).

The spelling of 2003101220 in words is "two billion, three million, one hundred one thousand, two hundred twenty".