121440044120 has 32 divisors (see below), whose sum is σ = 273961083600. Its totient is φ = 48447842688.

The previous prime is 121440044027. The next prime is 121440044123. The reversal of 121440044120 is 21440044121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121440044123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3990119 + ... + 4020438.

Almost surely, 2^121440044120 is an apocalyptic number.

121440044120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121440044120 is an abundant number, since it is smaller than the sum of its proper divisors (152521039480).

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

121440044120 is a wasteful number, since it uses less digits than its factorization.

121440044120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8010947 (or 8010943 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 121440044120 its reverse (21440044121), we get a palindrome (142880088241).

Subtracting from 121440044120 its reverse (21440044121), we obtain a palindrome (99999999999).

The spelling of 121440044120 in words is "one hundred twenty-one billion, four hundred forty million, forty-four thousand, one hundred twenty".