121430424144 has 160 divisors (see below), whose sum is σ = 322841051136. Its totient is φ = 39318289920.

The previous prime is 121430424113. The next prime is 121430424217. The reversal of 121430424144 is 441424034121.

It is a happy number.

121430424144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×121430424144³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67951219 + ... + 67953005.

Almost surely, 2^121430424144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121430424144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161420525568).

121430424144 is an abundant number, since it is smaller than the sum of its proper divisors (201410626992).

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

121430424144 is a wasteful number, since it uses less digits than its factorization.

121430424144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 121430424144 its reverse (441424034121), we get a palindrome (562854458265).

The spelling of 121430424144 in words is "one hundred twenty-one billion, four hundred thirty million, four hundred twenty-four thousand, one hundred forty-four".