121340866 has 16 divisors (see below), whose sum is σ = 192931200. Its totient is φ = 57038400.

The previous prime is 121340839. The next prime is 121340867. The reversal of 121340866 is 668043121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121340867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46291 + ... + 48841.

It is an arithmetic number, because the mean of its divisors is an integer number (12058200).

Almost surely, 2^121340866 is an apocalyptic number.

121340866 is a deficient number, since it is larger than the sum of its proper divisors (71590334).

121340866 is a wasteful number, since it uses less digits than its factorization.

121340866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 121340866 is about 11015.4830125601. The cubic root of 121340866 is about 495.0727587502.

Adding to 121340866 its reverse (668043121), we get a palindrome (789383987).

The spelling of 121340866 in words is "one hundred twenty-one million, three hundred forty thousand, eight hundred sixty-six".