121310788 has 12 divisors (see below), whose sum is σ = 212665852. Its totient is φ = 60549120.

The previous prime is 121310779. The next prime is 121310789. The reversal of 121310788 is 887013121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114746944 + 6563844 = 10712^2 + 2562^2 .

It is not an unprimeable number, because it can be changed into a prime (121310789) 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 3 ways as a sum of consecutive naturals, for example, 23973 + ... + 28588.

Almost surely, 2^121310788 is an apocalyptic number.

It is an amenable number.

121310788 is a deficient number, since it is larger than the sum of its proper divisors (91355064).

121310788 is a wasteful number, since it uses less digits than its factorization.

121310788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53142 (or 53140 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 121310788 is about 11014.1176677935. The cubic root of 121310788 is about 495.0318491224.

The spelling of 121310788 in words is "one hundred twenty-one million, three hundred ten thousand, seven hundred eighty-eight".