2121241401443 has 4 divisors (see below), whose sum is σ = 2133502912608. Its totient is φ = 2108979890280.

The previous prime is 2121241401431. The next prime is 2121241401479. The reversal of 2121241401443 is 3441041421212.

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 2121241401443 - 2²⁴ = 2121224624227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121241401043) 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, 6130755323 + ... + 6130755668.

It is an arithmetic number, because the mean of its divisors is an integer number (533375728152).

Almost surely, 2^{2121241401443} is an apocalyptic number.

2121241401443 is a deficient number, since it is larger than the sum of its proper divisors (12261511165).

2121241401443 is a wasteful number, since it uses less digits than its factorization.

2121241401443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261511164.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 2121241401443 its reverse (3441041421212), we get a palindrome (5562282822655).

The spelling of 2121241401443 in words is "two trillion, one hundred twenty-one billion, two hundred forty-one million, four hundred one thousand, four hundred forty-three".