2121434544 has 40 divisors (see below), whose sum is σ = 5482095552. Its totient is φ = 706922560.

The previous prime is 2121434519. The next prime is 2121434561. The reversal of 2121434544 is 4454341212.

2121434544 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232207 + ... + 241169.

Almost surely, 2^2121434544 is an apocalyptic number.

2121434544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2121434544 is an abundant number, since it is smaller than the sum of its proper divisors (3360661008).

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

2121434544 is a wasteful number, since it uses less digits than its factorization.

2121434544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13905 (or 13899 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 2121434544 is about 46059.0332508185. The cubic root of 2121434544 is about 1284.9213503418.

Adding to 2121434544 its reverse (4454341212), we get a palindrome (6575775756).

The spelling of 2121434544 in words is "two billion, one hundred twenty-one million, four hundred thirty-four thousand, five hundred forty-four".