121135133 has 4 divisors (see below), whose sum is σ = 138440160. Its totient is φ = 103830108.

The previous prime is 121135111. The next prime is 121135169. The reversal of 121135133 is 331531121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331531121 = 1193 ⋅277897.

It is a cyclic number.

It is not a de Polignac number, because 121135133 - 2¹⁰ = 121134109 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 (121135193) 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, 8652503 + ... + 8652516.

It is an arithmetic number, because the mean of its divisors is an integer number (34610040).

Almost surely, 2^121135133 is an apocalyptic number.

It is an amenable number.

121135133 is a deficient number, since it is larger than the sum of its proper divisors (17305027).

121135133 is an equidigital number, since it uses as much as digits as its factorization.

121135133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17305026.

The product of its digits is 270, while the sum is 20.

The square root of 121135133 is about 11006.1406950847. The cubic root of 121135133 is about 494.7928024441.

Adding to 121135133 its reverse (331531121), we get a palindrome (452666254).

The spelling of 121135133 in words is "one hundred twenty-one million, one hundred thirty-five thousand, one hundred thirty-three".