2100213020 has 12 divisors (see below), whose sum is σ = 4410447384. Its totient is φ = 840085200.

The previous prime is 2100212977. The next prime is 2100213041. The reversal of 2100213020 is 203120012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100212992 and 2100213010.

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, 52505306 + ... + 52505345.

It is an arithmetic number, because the mean of its divisors is an integer number (367537282).

Almost surely, 2^2100213020 is an apocalyptic number.

2100213020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100213020 is an abundant number, since it is smaller than the sum of its proper divisors (2310234364).

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

2100213020 is a wasteful number, since it uses less digits than its factorization.

2100213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105010660 (or 105010658 counting only the distinct ones).

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

The square root of 2100213020 is about 45828.0811293687. The cubic root of 2100213020 is about 1280.6224633606.

Adding to 2100213020 its reverse (203120012), we get a palindrome (2303333032).

The spelling of 2100213020 in words is "two billion, one hundred million, two hundred thirteen thousand, twenty".