121236 has 12 divisors (see below), whose sum is σ = 282912. Its totient is φ = 40408.

The previous prime is 121229. The next prime is 121259. The reversal of 121236 is 632121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

121236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5040 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (23576).

2¹²¹²³⁶ is an apocalyptic number.

It is an amenable number.

121236 is an abundant number, since it is smaller than the sum of its proper divisors (161676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121236 is a wasteful number, since it uses less digits than its factorization.

121236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110 (or 10108 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 121236 is about 348.1896035208. The cubic root of 121236 is about 49.4930099302.

Adding to 121236 its reverse (632121), we get a palindrome (753357).

The spelling of 121236 in words is "one hundred twenty-one thousand, two hundred thirty-six".