121133541 has 4 divisors (see below), whose sum is σ = 161511392. Its totient is φ = 80755692.

The previous prime is 121133533. The next prime is 121133563. The reversal of 121133541 is 145331121.

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 not a de Polignac number, because 121133541 - 2³ = 121133533 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 (121133591) 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, 20188921 + ... + 20188926.

It is an arithmetic number, because the mean of its divisors is an integer number (40377848).

Almost surely, 2^121133541 is an apocalyptic number.

It is an amenable number.

121133541 is a deficient number, since it is larger than the sum of its proper divisors (40377851).

121133541 is an equidigital number, since it uses as much as digits as its factorization.

121133541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40377850.

The product of its digits is 360, while the sum is 21.

The square root of 121133541 is about 11006.0683715848. The cubic root of 121133541 is about 494.7906348550.

Adding to 121133541 its reverse (145331121), we get a palindrome (266464662).

The spelling of 121133541 in words is "one hundred twenty-one million, one hundred thirty-three thousand, five hundred forty-one".