2121112212 has 24 divisors (see below), whose sum is σ = 4976610912. Its totient is φ = 703130400.

The previous prime is 2121112207. The next prime is 2121112223. The reversal of 2121112212 is 2122111212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2121112191 and 2121112200.

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, 486114 + ... + 490457.

It is an arithmetic number, because the mean of its divisors is an integer number (207358788).

Almost surely, 2^2121112212 is an apocalyptic number.

It is an amenable number.

2121112212 is an abundant number, since it is smaller than the sum of its proper divisors (2855498700).

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

2121112212 is a wasteful number, since it uses less digits than its factorization.

2121112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976759 (or 976757 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 2121112212 is about 46055.5339997269. The cubic root of 2121112212 is about 1284.8562698128.

Adding to 2121112212 its reverse (2122111212), we get a palindrome (4243223424).

The spelling of 2121112212 in words is "two billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twelve".