12441022121 has 4 divisors (see below), whose sum is σ = 13572024144. Its totient is φ = 11310020100.

The previous prime is 12441022109. The next prime is 12441022159. The reversal of 12441022121 is 12122014421.

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 not a de Polignac number, because 12441022121 - 2⁶ = 12441022057 is a prime.

It is a super-2 number, since 2×12441022121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12441022093 and 12441022102.

It is not an unprimeable number, because it can be changed into a prime (12441022721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565500995 + ... + 565501016.

It is an arithmetic number, because the mean of its divisors is an integer number (3393006036).

Almost surely, 2^12441022121 is an apocalyptic number.

12441022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12441022121 is a deficient number, since it is larger than the sum of its proper divisors (1131002023).

12441022121 is a wasteful number, since it uses less digits than its factorization.

12441022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131002022.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12441022121 its reverse (12122014421), we get a palindrome (24563036542).

The spelling of 12441022121 in words is "twelve billion, four hundred forty-one million, twenty-two thousand, one hundred twenty-one".