121136 has 20 divisors (see below), whose sum is σ = 240312. Its totient is φ = 59136.

The previous prime is 121123. The next prime is 121139. The reversal of 121136 is 631121.

It is a self number, because there is not a number n which added to its sum of digits gives 121136.

It is not an unprimeable number, because it can be changed into a prime (121139) by changing a digit.

121136 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, 1016 + ... + 1128.

2¹²¹¹³⁶ is an apocalyptic number.

121136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121136 is a deficient number, since it is larger than the sum of its proper divisors (119176).

121136 is a wasteful number, since it uses less digits than its factorization.

121136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 182 counting only the distinct ones).

The product of its digits is 36, while the sum is 14.

The square root of 121136 is about 348.0459739747. The cubic root of 121136 is about 49.4793982901.

Adding to 121136 its reverse (631121), we get a palindrome (752257).

The spelling of 121136 in words is "one hundred twenty-one thousand, one hundred thirty-six".