121321441234444 has 24 divisors (see below), whose sum is σ = 245237993512848. Its totient is φ = 51902220848640.

The previous prime is 121321441234421. The next prime is 121321441234447. The reversal of 121321441234444 is 444432144123121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121321441234397 and 121321441234406.

It is not an unprimeable number, because it can be changed into a prime (121321441234447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81097219329 + ... + 81097220824.

It is an arithmetic number, because the mean of its divisors is an integer number (10218249729702).

Almost surely, 2^{121321441234444} is an apocalyptic number.

It is an amenable number.

121321441234444 is an abundant number, since it is smaller than the sum of its proper divisors (123916552278404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121321441234444 is a wasteful number, since it uses less digits than its factorization.

121321441234444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162194440185 (or 162194440183 counting only the distinct ones).

The product of its digits is 294912, while the sum is 40.

Adding to 121321441234444 its reverse (444432144123121), we get a palindrome (565753585357565).

The spelling of 121321441234444 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, four hundred forty-one million, two hundred thirty-four thousand, four hundred forty-four".