2121024443 has 4 divisors (see below), whose sum is σ = 2121650400. Its totient is φ = 2120398488.

The previous prime is 2121024439. The next prime is 2121024463. The reversal of 2121024443 is 3444201212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121024443 - 2² = 2121024439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121024463) 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, 307868 + ... + 314681.

It is an arithmetic number, because the mean of its divisors is an integer number (530412600).

Almost surely, 2^2121024443 is an apocalyptic number.

2121024443 is a deficient number, since it is larger than the sum of its proper divisors (625957).

2121024443 is an equidigital number, since it uses as much as digits as its factorization.

2121024443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625956.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2121024443 is about 46054.5811293513. The cubic root of 2121024443 is about 1284.8385476472.

Adding to 2121024443 its reverse (3444201212), we get a palindrome (5565225655).

The spelling of 2121024443 in words is "two billion, one hundred twenty-one million, twenty-four thousand, four hundred forty-three".