2421332421121 has 12 divisors (see below), whose sum is σ = 2429051759244. Its totient is φ = 2413636608000.

The previous prime is 2421332421077. The next prime is 2421332421187. The reversal of 2421332421121 is 1211242331242.

It can be written as a sum of positive squares in 6 ways, for example, as 2113057620496 + 308274800625 = 1453636^2 + 555225^2 .

It is not a de Polignac number, because 2421332421121 - 2¹³ = 2421332412929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2421332421121.

It is not an unprimeable number, because it can be changed into a prime (2421332421421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267812361 + ... + 267821401.

It is an arithmetic number, because the mean of its divisors is an integer number (202420979937).

Almost surely, 2^{2421332421121} is an apocalyptic number.

It is an amenable number.

2421332421121 is a deficient number, since it is larger than the sum of its proper divisors (7719338123).

2421332421121 is an frugal number, since it uses more digits than its factorization.

2421332421121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11460 (or 11051 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 2421332421121 its reverse (1211242331242), we get a palindrome (3632574752363).

The spelling of 2421332421121 in words is "two trillion, four hundred twenty-one billion, three hundred thirty-two million, four hundred twenty-one thousand, one hundred twenty-one".