2121200232 has 64 divisors (see below), whose sum is σ = 5459286720. Its totient is φ = 686320128.

The previous prime is 2121200209. The next prime is 2121200293. The reversal of 2121200232 is 2320021212.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 403203 + ... + 408429.

It is an arithmetic number, because the mean of its divisors is an integer number (85301355).

Almost surely, 2^2121200232 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 2121200232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2729643360).

2121200232 is an abundant number, since it is smaller than the sum of its proper divisors (3338086488).

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

2121200232 is a wasteful number, since it uses less digits than its factorization.

2121200232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730 (or 5726 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2121200232 is about 46056.4895753031. The cubic root of 2121200232 is about 1284.8740421689.

Adding to 2121200232 its reverse (2320021212), we get a palindrome (4441221444).

The spelling of 2121200232 in words is "two billion, one hundred twenty-one million, two hundred thousand, two hundred thirty-two".