2421133341421 has 4 divisors (see below), whose sum is σ = 2428317713692. Its totient is φ = 2413948969152.

The previous prime is 2421133341413. The next prime is 2421133341439. The reversal of 2421133341421 is 1241433311242.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 387457696521 + 2033675644900 = 622461^2 + 1426070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421133341421 - 2³ = 2421133341413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421133341821) 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, 3592185630 + ... + 3592186303.

It is an arithmetic number, because the mean of its divisors is an integer number (607079428423).

Almost surely, 2^{2421133341421} is an apocalyptic number.

It is an amenable number.

2421133341421 is a deficient number, since it is larger than the sum of its proper divisors (7184372271).

2421133341421 is an equidigital number, since it uses as much as digits as its factorization.

2421133341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7184372270.

The product of its digits is 13824, while the sum is 31.

Adding to 2421133341421 its reverse (1241433311242), we get a palindrome (3662566652663).

The spelling of 2421133341421 in words is "two trillion, four hundred twenty-one billion, one hundred thirty-three million, three hundred forty-one thousand, four hundred twenty-one".