2120209212 has 24 divisors (see below), whose sum is σ = 5396896512. Its totient is φ = 642487600.

The previous prime is 2120209177. The next prime is 2120209241. The reversal of 2120209212 is 2129020212.

It is a happy number.

It is a congruent number.

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, 8030964 + ... + 8031227.

It is an arithmetic number, because the mean of its divisors is an integer number (224870688).

Almost surely, 2^2120209212 is an apocalyptic number.

2120209212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2120209212 is an abundant number, since it is smaller than the sum of its proper divisors (3276687300).

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

2120209212 is a wasteful number, since it uses less digits than its factorization.

2120209212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16062209 (or 16062207 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2120209212 is about 46045.7295739790. The cubic root of 2120209212 is about 1284.6739142405.

Adding to 2120209212 its reverse (2129020212), we get a palindrome (4249229424).

The spelling of 2120209212 in words is "two billion, one hundred twenty million, two hundred nine thousand, two hundred twelve".