121144424240 has 80 divisors (see below), whose sum is σ = 335893644288. Its totient is φ = 39729347328.

The previous prime is 121144424189. The next prime is 121144424311. The reversal of 121144424240 is 42424441121.

121144424240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×121144424240³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4689932 + ... + 4715691.

Almost surely, 2^121144424240 is an apocalyptic number.

121144424240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121144424240 is an abundant number, since it is smaller than the sum of its proper divisors (214749220048).

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

121144424240 is a wasteful number, since it uses less digits than its factorization.

121144424240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9405666 (or 9405660 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 121144424240 its reverse (42424441121), we get a palindrome (163568865361).

The spelling of 121144424240 in words is "one hundred twenty-one billion, one hundred forty-four million, four hundred twenty-four thousand, two hundred forty".