2121212232 has 32 divisors (see below), whose sum is σ = 5892256800. Its totient is φ = 707070672.

The previous prime is 2121212209. The next prime is 2121212263. The reversal of 2121212232 is 2322121212.

2121212232 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

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, 4909998 + ... + 4910429.

It is an arithmetic number, because the mean of its divisors is an integer number (184133025).

Almost surely, 2^2121212232 is an apocalyptic number.

It is an amenable number.

2121212232 is an abundant number, since it is smaller than the sum of its proper divisors (3771044568).

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

2121212232 is a wasteful number, since it uses less digits than its factorization.

2121212232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9820442 (or 9820432 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2121212232 is about 46056.6198499195. The cubic root of 2121212232 is about 1284.8764650832.

Adding to 2121212232 its reverse (2322121212), we get a palindrome (4443333444).

The spelling of 2121212232 in words is "two billion, one hundred twenty-one million, two hundred twelve thousand, two hundred thirty-two".