2121330132 has 36 divisors (see below), whose sum is σ = 5453142240. Its totient is φ = 695124432.

The previous prime is 2121330121. The next prime is 2121330157. The reversal of 2121330132 is 2310331212.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2121330132² = 9000083057862274848, which contains 22 as substring.

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

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 497248 + ... + 501495.

Almost surely, 2^2121330132 is an apocalyptic number.

It is an amenable number.

2121330132 is an abundant number, since it is smaller than the sum of its proper divisors (3331812108).

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

2121330132 is a wasteful number, since it uses less digits than its factorization.

2121330132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998812 (or 998807 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2121330132 is about 46057.8997784311. The cubic root of 2121330132 is about 1284.9002697308.

Adding to 2121330132 its reverse (2310331212), we get a palindrome (4431661344).

The spelling of 2121330132 in words is "two billion, one hundred twenty-one million, three hundred thirty thousand, one hundred thirty-two".