2121132344 has 16 divisors (see below), whose sum is σ = 4105417920. Its totient is φ = 1026354240.

The previous prime is 2121132341. The next prime is 2121132353. The reversal of 2121132344 is 4432311212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121132341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4276229 + ... + 4276724.

It is an arithmetic number, because the mean of its divisors is an integer number (256588620).

Almost surely, 2^2121132344 is an apocalyptic number.

It is an amenable number.

2121132344 is a deficient number, since it is larger than the sum of its proper divisors (1984285576).

2121132344 is a wasteful number, since it uses less digits than its factorization.

2121132344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552990 (or 8552986 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 2121132344 is about 46055.7525614336. The cubic root of 2121132344 is about 1284.8603347627.

Adding to 2121132344 its reverse (4432311212), we get a palindrome (6553443556).

The spelling of 2121132344 in words is "two billion, one hundred twenty-one million, one hundred thirty-two thousand, three hundred forty-four".