121387116148 has 6 divisors (see below), whose sum is σ = 212427453266. Its totient is φ = 60693558072.

The previous prime is 121387116143. The next prime is 121387116239. The reversal of 121387116148 is 841611783121.

121387116148 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 97511303824 + 23875812324 = 312268^2 + 154518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121387116143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15173389515 + ... + 15173389522.

Almost surely, 2^121387116148 is an apocalyptic number.

It is an amenable number.

121387116148 is a deficient number, since it is larger than the sum of its proper divisors (91040337118).

121387116148 is a wasteful number, since it uses less digits than its factorization.

121387116148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30346779041 (or 30346779039 counting only the distinct ones).

The product of its digits is 64512, while the sum is 43.

Adding to 121387116148 its reverse (841611783121), we get a palindrome (962998899269).

The spelling of 121387116148 in words is "one hundred twenty-one billion, three hundred eighty-seven million, one hundred sixteen thousand, one hundred forty-eight".