2121012212 has 48 divisors (see below), whose sum is σ = 4165608384. Its totient is φ = 936768000.

The previous prime is 2121012211. The next prime is 2121012227. The reversal of 2121012212 is 2122101212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121012211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218012 + ... + 227532.

It is an arithmetic number, because the mean of its divisors is an integer number (86783508).

Almost surely, 2^2121012212 is an apocalyptic number.

2121012212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121012212 is a deficient number, since it is larger than the sum of its proper divisors (2044596172).

2121012212 is a wasteful number, since it uses less digits than its factorization.

2121012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9680 (or 9678 counting only the distinct ones).

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

The square root of 2121012212 is about 46054.4483410669. The cubic root of 2121012212 is about 1284.8360779459.

Adding to 2121012212 its reverse (2122101212), we get a palindrome (4243113424).

The spelling of 2121012212 in words is "two billion, one hundred twenty-one million, twelve thousand, two hundred twelve".