121321444244 has 72 divisors (see below), whose sum is σ = 287222646144. Its totient is φ = 43632072000.

The previous prime is 121321444207. The next prime is 121321444247. The reversal of 121321444244 is 442444123121.

It is a self number, because there is not a number n which added to its sum of digits gives 121321444244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321444247) 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 23 ways as a sum of consecutive naturals, for example, 1333232 + ... + 1421319.

Almost surely, 2^121321444244 is an apocalyptic number.

121321444244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121321444244 is an abundant number, since it is smaller than the sum of its proper divisors (165901201900).

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

121321444244 is a wasteful number, since it uses less digits than its factorization.

121321444244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754597 (or 2754584 counting only the distinct ones).

The product of its digits is 24576, while the sum is 32.

Adding to 121321444244 its reverse (442444123121), we get a palindrome (563765567365).

It can be divided in two parts, 121321 and 444244, that added together give a palindrome (565565).

The spelling of 121321444244 in words is "one hundred twenty-one billion, three hundred twenty-one million, four hundred forty-four thousand, two hundred forty-four".