2100133212 has 12 divisors (see below), whose sum is σ = 4900310856. Its totient is φ = 700044400.

The previous prime is 2100133207. The next prime is 2100133219. The reversal of 2100133212 is 2123310012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2100133191 and 2100133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100133219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87505539 + ... + 87505562.

It is an arithmetic number, because the mean of its divisors is an integer number (408359238).

Almost surely, 2^2100133212 is an apocalyptic number.

It is an amenable number.

2100133212 is an abundant number, since it is smaller than the sum of its proper divisors (2800177644).

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

2100133212 is a wasteful number, since it uses less digits than its factorization.

2100133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175011108 (or 175011106 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2100133212 is about 45827.2103885890. The cubic root of 2100133212 is about 1280.6062419565.

Adding to 2100133212 its reverse (2123310012), we get a palindrome (4223443224).

The spelling of 2100133212 in words is "two billion, one hundred million, one hundred thirty-three thousand, two hundred twelve".