136121 has 4 divisors (see below), whose sum is σ = 140544. Its totient is φ = 131700.

The previous prime is 136111. The next prime is 136133. The reversal of 136121 is 121631.

136121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136121 - 2⁶ = 136057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136096 and 136105.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136121.

It is not an unprimeable number, because it can be changed into a prime (136111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2165 + ... + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (35136).

2¹³⁶¹²¹ is an apocalyptic number.

It is an amenable number.

136121 is a deficient number, since it is larger than the sum of its proper divisors (4423).

136121 is an equidigital number, since it uses as much as digits as its factorization.

136121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422.

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

The square root of 136121 is about 368.9457954768. The cubic root of 136121 is about 51.4408785214.

Adding to 136121 its reverse (121631), we get a palindrome (257752).

The spelling of 136121 in words is "one hundred thirty-six thousand, one hundred twenty-one".