12121768 has 16 divisors (see below), whose sum is σ = 23512500. Its totient is φ = 5851776.

The previous prime is 12121757. The next prime is 12121771. The reversal of 12121768 is 86712121.

It can be written as a sum of positive squares in 2 ways, for example, as 10771524 + 1350244 = 3282^2 + 1162^2 .

It is an unprimeable number.

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, 25893 + ... + 26356.

Almost surely, 2^12121768 is an apocalyptic number.

It is an amenable number.

12121768 is a deficient number, since it is larger than the sum of its proper divisors (11390732).

12121768 is a wasteful number, since it uses less digits than its factorization.

12121768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52284 (or 52280 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 12121768 is about 3481.6329502117. The cubic root of 12121768 is about 229.7146303245.

Adding to 12121768 its reverse (86712121), we get a palindrome (98833889).

The spelling of 12121768 in words is "twelve million, one hundred twenty-one thousand, seven hundred sixty-eight".