2121331332 has 24 divisors (see below), whose sum is σ = 5240936736. Its totient is φ = 665515648.

The previous prime is 2121331321. The next prime is 2121331337. The reversal of 2121331332 is 2331331212.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121331299 and 2121331308.

It is not an unprimeable number, because it can be changed into a prime (2121331337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5199138 + ... + 5199545.

It is an arithmetic number, because the mean of its divisors is an integer number (218372364).

Almost surely, 2^2121331332 is an apocalyptic number.

It is an amenable number.

2121331332 is an abundant number, since it is smaller than the sum of its proper divisors (3119605404).

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

2121331332 is a wasteful number, since it uses less digits than its factorization.

2121331332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10398707 (or 10398705 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 2121331332 is about 46057.9128055104. The cubic root of 2121331332 is about 1284.9005120127.

Adding to 2121331332 its reverse (2331331212), we get a palindrome (4452662544).

The spelling of 2121331332 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred thirty-two".