2121032312 has 32 divisors (see below), whose sum is σ = 4557772800. Its totient is φ = 906473184.

The previous prime is 2121032311. The next prime is 2121032351. The reversal of 2121032312 is 2132301212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121032311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32648 + ... + 72855.

It is an arithmetic number, because the mean of its divisors is an integer number (142430400).

Almost surely, 2^2121032312 is an apocalyptic number.

It is an amenable number.

2121032312 is an abundant number, since it is smaller than the sum of its proper divisors (2436740488).

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

2121032312 is a wasteful number, since it uses less digits than its factorization.

2121032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105875 (or 105871 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2121032312 is about 46054.6665605126. Note that the first 3 decimals coincide. The cubic root of 2121032312 is about 1284.8401365621.

Adding to 2121032312 its reverse (2132301212), we get a palindrome (4253333524).

The spelling of 2121032312 in words is "two billion, one hundred twenty-one million, thirty-two thousand, three hundred twelve".