2121204232 has 96 divisors (see below), whose sum is σ = 4826934720. Its totient is φ = 855930240.

The previous prime is 2121204227. The next prime is 2121204299. The reversal of 2121204232 is 2324021212.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6408307 + ... + 6408637.

It is an arithmetic number, because the mean of its divisors is an integer number (50280570).

Almost surely, 2^2121204232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121204232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2413467360).

2121204232 is an abundant number, since it is smaller than the sum of its proper divisors (2705730488).

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

2121204232 is a wasteful number, since it uses less digits than its factorization.

2121204232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2121204232 is about 46056.5330002162. The cubic root of 2121204232 is about 1284.8748498080.

Adding to 2121204232 its reverse (2324021212), we get a palindrome (4445225444).

The spelling of 2121204232 in words is "two billion, one hundred twenty-one million, two hundred four thousand, two hundred thirty-two".