2121433241 has 4 divisors (see below), whose sum is σ = 2121610512. Its totient is φ = 2121255972.

The previous prime is 2121433229. The next prime is 2121433291. The reversal of 2121433241 is 1423341212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121433241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121433291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69275 + ... + 95088.

It is an arithmetic number, because the mean of its divisors is an integer number (530402628).

Almost surely, 2^2121433241 is an apocalyptic number.

It is an amenable number.

2121433241 is a deficient number, since it is larger than the sum of its proper divisors (177271).

2121433241 is a wasteful number, since it uses less digits than its factorization.

2121433241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177270.

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

The square root of 2121433241 is about 46059.0191059254. The cubic root of 2121433241 is about 1284.9210872725.

Adding to 2121433241 its reverse (1423341212), we get a palindrome (3544774453).

The spelling of 2121433241 in words is "two billion, one hundred twenty-one million, four hundred thirty-three thousand, two hundred forty-one".