2103212020 has 48 divisors (see below), whose sum is σ = 5435998848. Its totient is φ = 665631360.

The previous prime is 2103212003. The next prime is 2103212029. The reversal of 2103212020 is 202123012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103212029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575986 + ... + 579625.

It is an arithmetic number, because the mean of its divisors is an integer number (113249976).

Almost surely, 2^2103212020 is an apocalyptic number.

2103212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103212020 is an abundant number, since it is smaller than the sum of its proper divisors (3332786828).

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

2103212020 is a wasteful number, since it uses less digits than its factorization.

2103212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155640 (or 1155638 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2103212020 is about 45860.7895701764. The cubic root of 2103212020 is about 1281.2317285675.

Adding to 2103212020 its reverse (202123012), we get a palindrome (2305335032).

The spelling of 2103212020 in words is "two billion, one hundred three million, two hundred twelve thousand, twenty".