121688733 has 16 divisors (see below), whose sum is σ = 168820736. Its totient is φ = 77883120.

The previous prime is 121688681. The next prime is 121688741. The reversal of 121688733 is 337886121.

It is not a de Polignac number, because 121688733 - 2¹² = 121684637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121688691 and 121688700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121688783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6660 + ... + 16962.

It is an arithmetic number, because the mean of its divisors is an integer number (10551296).

Almost surely, 2^121688733 is an apocalyptic number.

It is an amenable number.

121688733 is a deficient number, since it is larger than the sum of its proper divisors (47132003).

121688733 is a wasteful number, since it uses less digits than its factorization.

121688733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10464.

The product of its digits is 48384, while the sum is 39.

The square root of 121688733 is about 11031.2616232233. The cubic root of 121688733 is about 495.5454084200.

The spelling of 121688733 in words is "one hundred twenty-one million, six hundred eighty-eight thousand, seven hundred thirty-three".