2121133252 has 24 divisors (see below), whose sum is σ = 4295970560. Its totient is φ = 897549120.

The previous prime is 2121133247. The next prime is 2121133279. The reversal of 2121133252 is 2523311212.

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 7 ways as a sum of consecutive naturals, for example, 477249 + ... + 481672.

Almost surely, 2^2121133252 is an apocalyptic number.

It is an amenable number.

2121133252 is an abundant number, since it is smaller than the sum of its proper divisors (2174837308).

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

2121133252 is a wasteful number, since it uses less digits than its factorization.

2121133252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959011 (or 959009 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 2121133252 is about 46055.7624190502. The cubic root of 2121133252 is about 1284.8605181008.

Adding to 2121133252 its reverse (2523311212), we get a palindrome (4644444464).

The spelling of 2121133252 in words is "two billion, one hundred twenty-one million, one hundred thirty-three thousand, two hundred fifty-two".