2121285344 has 24 divisors (see below), whose sum is σ = 4177363680. Its totient is φ = 1060367616.

The previous prime is 2121285307. The next prime is 2121285349. The reversal of 2121285344 is 4435821212.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 2121285344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121285349) 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 3 ways as a sum of consecutive naturals, for example, 181172 + ... + 192524.

It is an arithmetic number, because the mean of its divisors is an integer number (174056820).

Almost surely, 2^2121285344 is an apocalyptic number.

It is an amenable number.

2121285344 is a deficient number, since it is larger than the sum of its proper divisors (2056078336).

2121285344 is a wasteful number, since it uses less digits than its factorization.

2121285344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17202 (or 17194 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 2121285344 is about 46057.4135617709. The cubic root of 2121285344 is about 1284.8912268953.

The spelling of 2121285344 in words is "two billion, one hundred twenty-one million, two hundred eighty-five thousand, three hundred forty-four".