121143112424 has 16 divisors (see below), whose sum is σ = 227262101220. Its totient is φ = 60539885440.

The previous prime is 121143112397. The next prime is 121143112439. The reversal of 121143112424 is 424211341121.

It can be written as a sum of positive squares in 2 ways, for example, as 113759147524 + 7383964900 = 337282^2 + 85930^2 .

It is a super-3 number, since 3×121143112424³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121143112393 and 121143112402.

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 3 ways as a sum of consecutive naturals, for example, 3942587 + ... + 3973194.

Almost surely, 2^121143112424 is an apocalyptic number.

It is an amenable number.

121143112424 is a deficient number, since it is larger than the sum of its proper divisors (106118988796).

121143112424 is a wasteful number, since it uses less digits than its factorization.

121143112424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7917700 (or 7917696 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

Adding to 121143112424 its reverse (424211341121), we get a palindrome (545354453545).

The spelling of 121143112424 in words is "one hundred twenty-one billion, one hundred forty-three million, one hundred twelve thousand, four hundred twenty-four".