121135211 has 4 divisors (see below), whose sum is σ = 121162800. Its totient is φ = 121107624.

The previous prime is 121135193. The next prime is 121135247. The reversal of 121135211 is 112531121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121135211 - 2¹⁰ = 121134187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121135211.

It is not an unprimeable number, because it can be changed into a prime (121135111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576 + ... + 16533.

It is an arithmetic number, because the mean of its divisors is an integer number (30290700).

Almost surely, 2^121135211 is an apocalyptic number.

121135211 is a deficient number, since it is larger than the sum of its proper divisors (27589).

121135211 is an equidigital number, since it uses as much as digits as its factorization.

121135211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27588.

The product of its digits is 60, while the sum is 17.

The square root of 121135211 is about 11006.1442385606. The cubic root of 121135211 is about 494.7929086446.

Adding to 121135211 its reverse (112531121), we get a palindrome (233666332).

The spelling of 121135211 in words is "one hundred twenty-one million, one hundred thirty-five thousand, two hundred eleven".