121686112 has 48 divisors (see below), whose sum is σ = 244490400. Its totient is φ = 59609088.

The previous prime is 121686101. The next prime is 121686139. The reversal of 121686112 is 211686121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611389 + ... + 611587.

It is an arithmetic number, because the mean of its divisors is an integer number (5093550).

Almost surely, 2^121686112 is an apocalyptic number.

It is an amenable number.

121686112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

121686112 is a wasteful number, since it uses less digits than its factorization.

121686112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 495 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 121686112 is about 11031.1428238420. The cubic root of 121686112 is about 495.5418506163.

Subtracting 121686112 from its reverse (211686121), we obtain a palindrome (90000009).

The spelling of 121686112 in words is "one hundred twenty-one million, six hundred eighty-six thousand, one hundred twelve".