121683288731 has 8 divisors (see below), whose sum is σ = 124657357104. Its totient is φ = 118709514880.

The previous prime is 121683288709. The next prime is 121683288773. The reversal of 121683288731 is 137882386121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121683288731 - 2⁶ = 121683288667 is a prime.

It is a super-2 number, since 2×121683288731² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121683288731.

It is not an unprimeable number, because it can be changed into a prime (121683288781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926831 + ... + 1049943.

It is an arithmetic number, because the mean of its divisors is an integer number (15582169638).

Almost surely, 2^121683288731 is an apocalyptic number.

121683288731 is a deficient number, since it is larger than the sum of its proper divisors (2974068373).

121683288731 is a wasteful number, since it uses less digits than its factorization.

121683288731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147261.

The product of its digits is 774144, while the sum is 50.

The spelling of 121683288731 in words is "one hundred twenty-one billion, six hundred eighty-three million, two hundred eighty-eight thousand, seven hundred thirty-one".