2421121443 has 16 divisors (see below), whose sum is σ = 3479794080. Its totient is φ = 1488501504.

The previous prime is 2421121441. The next prime is 2421121457. The reversal of 2421121443 is 3441211242.

It is not a de Polignac number, because 2421121443 - 2¹ = 2421121441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421121441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12655 + ... + 70727.

It is an arithmetic number, because the mean of its divisors is an integer number (217487130).

Almost surely, 2^2421121443 is an apocalyptic number.

2421121443 is a deficient number, since it is larger than the sum of its proper divisors (1058672637).

2421121443 is a wasteful number, since it uses less digits than its factorization.

2421121443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59158.

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

The square root of 2421121443 is about 49204.8924701599. The cubic root of 2421121443 is about 1342.7820427018.

Adding to 2421121443 its reverse (3441211242), we get a palindrome (5862332685).

It can be divided in two parts, 24211 and 21443, that added together give a palindrome (45654).

The spelling of 2421121443 in words is "two billion, four hundred twenty-one million, one hundred twenty-one thousand, four hundred forty-three".