121241135 has 4 divisors (see below), whose sum is σ = 145489368. Its totient is φ = 96992904.

The previous prime is 121241077. The next prime is 121241137. The reversal of 121241135 is 531142121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531142121 = 89 ⋅5967889.

It is a cyclic number.

It is not a de Polignac number, because 121241135 - 2¹⁶ = 121175599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121241137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12124109 + ... + 12124118.

It is an arithmetic number, because the mean of its divisors is an integer number (36372342).

Almost surely, 2^121241135 is an apocalyptic number.

121241135 is a deficient number, since it is larger than the sum of its proper divisors (24248233).

121241135 is an equidigital number, since it uses as much as digits as its factorization.

121241135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24248232.

The product of its digits is 240, while the sum is 20.

The square root of 121241135 is about 11010.9552265006. The cubic root of 121241135 is about 494.9370868585.

Adding to 121241135 its reverse (531142121), we get a palindrome (652383256).

The spelling of 121241135 in words is "one hundred twenty-one million, two hundred forty-one thousand, one hundred thirty-five".