2100243213 has 12 divisors (see below), whose sum is σ = 3047291520. Its totient is φ = 1393882056.

The previous prime is 2100243179. The next prime is 2100243239. The reversal of 2100243213 is 3123420012.

2100243213 is a `hidden beast` number, since 210 + 0 + 243 + 213 = 666.

It is not a de Polignac number, because 2100243213 - 2¹² = 2100239117 is a prime.

It is a super-2 number, since 2×2100243213² = 8822043107505126738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100243263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 521223 + ... + 525236.

It is an arithmetic number, because the mean of its divisors is an integer number (253940960).

Almost surely, 2^2100243213 is an apocalyptic number.

It is an amenable number.

2100243213 is a deficient number, since it is larger than the sum of its proper divisors (947048307).

2100243213 is a wasteful number, since it uses less digits than its factorization.

2100243213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046688 (or 1046685 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2100243213 is about 45828.4105441155. The cubic root of 2100243213 is about 1280.6286001427.

Adding to 2100243213 its reverse (3123420012), we get a palindrome (5223663225).

The spelling of 2100243213 in words is "two billion, one hundred million, two hundred forty-three thousand, two hundred thirteen".