121868 has 6 divisors (see below), whose sum is σ = 213276. Its totient is φ = 60932.

The previous prime is 121867. The next prime is 121883. The reversal of 121868 is 868121.

It is not an unprimeable number, because it can be changed into a prime (121867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15230 + ... + 15237.

It is an arithmetic number, because the mean of its divisors is an integer number (35546).

2¹²¹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

121868 is a deficient number, since it is larger than the sum of its proper divisors (91408).

121868 is a wasteful number, since it uses less digits than its factorization.

121868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30471 (or 30469 counting only the distinct ones).

The product of its digits is 768, while the sum is 26.

The square root of 121868 is about 349.0959753420. The cubic root of 121868 is about 49.5788628285.

Adding to 121868 its reverse (868121), we get a palindrome (989989).

It can be divided in two parts, 121 and 868, that added together give a palindrome (989).

The spelling of 121868 in words is "one hundred twenty-one thousand, eight hundred sixty-eight".