2103210020 has 24 divisors (see below), whose sum is σ = 4437682368. Its totient is φ = 837295200.

The previous prime is 2103210013. The next prime is 2103210071. The reversal of 2103210020 is 200123012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2103209983 and 2103210010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244976 + ... + 253415.

It is an arithmetic number, because the mean of its divisors is an integer number (184903432).

Almost surely, 2^2103210020 is an apocalyptic number.

2103210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103210020 is an abundant number, since it is smaller than the sum of its proper divisors (2334472348).

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

2103210020 is a wasteful number, since it uses less digits than its factorization.

2103210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498611 (or 498609 counting only the distinct ones).

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

The square root of 2103210020 is about 45860.7677650516. The cubic root of 2103210020 is about 1281.2313224483.

Adding to 2103210020 its reverse (200123012), we get a palindrome (2303333032).

The spelling of 2103210020 in words is "two billion, one hundred three million, two hundred ten thousand, twenty".