2121134532 has 96 divisors (see below), whose sum is σ = 5480092800. Its totient is φ = 633216000.

The previous prime is 2121134453. The next prime is 2121134563. The reversal of 2121134532 is 2354311212.

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 31 ways as a sum of consecutive naturals, for example, 5185944 + ... + 5186352.

It is an arithmetic number, because the mean of its divisors is an integer number (57084300).

Almost surely, 2^2121134532 is an apocalyptic number.

2121134532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121134532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740046400).

2121134532 is an abundant number, since it is smaller than the sum of its proper divisors (3358958268).

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

2121134532 is a wasteful number, since it uses less digits than its factorization.

2121134532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 915 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 2121134532 is about 46055.7763152463. The cubic root of 2121134532 is about 1284.8607765509.

Adding to 2121134532 its reverse (2354311212), we get a palindrome (4475445744).

The spelling of 2121134532 in words is "two billion, one hundred twenty-one million, one hundred thirty-four thousand, five hundred thirty-two".