2121432441 has 32 divisors (see below), whose sum is σ = 3063137280. Its totient is φ = 1301832000.

The previous prime is 2121432437. The next prime is 2121432463. The reversal of 2121432441 is 1442341212.

It is not a de Polignac number, because 2121432441 - 2² = 2121432437 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2121432421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284916 + ... + 292266.

It is an arithmetic number, because the mean of its divisors is an integer number (95723040).

Almost surely, 2^2121432441 is an apocalyptic number.

It is an amenable number.

2121432441 is a deficient number, since it is larger than the sum of its proper divisors (941704839).

2121432441 is a wasteful number, since it uses less digits than its factorization.

2121432441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517.

The product of its digits is 1536, while the sum is 24.

The square root of 2121432441 is about 46059.0104214148. The cubic root of 2121432441 is about 1284.9209257564.

Adding to 2121432441 its reverse (1442341212), we get a palindrome (3563773653).

The spelling of 2121432441 in words is "two billion, one hundred twenty-one million, four hundred thirty-two thousand, four hundred forty-one".