2102003220 has 48 divisors (see below), whose sum is σ = 5956534080. Its totient is φ = 553779456.

The previous prime is 2102003219. The next prime is 2102003227. The reversal of 2102003220 is 223002012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2102003196 and 2102003205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102003227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206065 + ... + 216024.

It is an arithmetic number, because the mean of its divisors is an integer number (124094460).

Almost surely, 2^2102003220 is an apocalyptic number.

2102003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102003220 is an abundant number, since it is smaller than the sum of its proper divisors (3854530860).

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

2102003220 is a wasteful number, since it uses less digits than its factorization.

2102003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422184 (or 422182 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2102003220 is about 45847.6086617394. The cubic root of 2102003220 is about 1280.9862231685.

Adding to 2102003220 its reverse (223002012), we get a palindrome (2325005232).

The spelling of 2102003220 in words is "two billion, one hundred two million, three thousand, two hundred twenty".