2112021212 has 24 divisors (see below), whose sum is σ = 4263525504. Its totient is φ = 896691312.

The previous prime is 2112021203. The next prime is 2112021217. The reversal of 2112021212 is 2121202112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112021217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349478 + ... + 355469.

It is an arithmetic number, because the mean of its divisors is an integer number (177646896).

Almost surely, 2^2112021212 is an apocalyptic number.

It is an amenable number.

2112021212 is an abundant number, since it is smaller than the sum of its proper divisors (2151504292).

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

2112021212 is a wasteful number, since it uses less digits than its factorization.

2112021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705065 (or 705063 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2112021212 is about 45956.7319551771. The cubic root of 2112021212 is about 1283.0180273260.

Adding to 2112021212 its reverse (2121202112), we get a palindrome (4233223324).

Subtracting 2112021212 from its reverse (2121202112), we obtain a square (9180900 = 3030²).

The spelling of 2112021212 in words is "two billion, one hundred twelve million, twenty-one thousand, two hundred twelve".