230121133 has 4 divisors (see below), whose sum is σ = 251041248. Its totient is φ = 209201020.

The previous prime is 230121121. The next prime is 230121137. The reversal of 230121133 is 331121032.

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 a de Polignac number, because none of the positive numbers 2^k-230121133 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 (230121137) 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, 10460041 + ... + 10460062.

It is an arithmetic number, because the mean of its divisors is an integer number (62760312).

Almost surely, 2^230121133 is an apocalyptic number.

It is an amenable number.

230121133 is a deficient number, since it is larger than the sum of its proper divisors (20920115).

230121133 is a wasteful number, since it uses less digits than its factorization.

230121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20920114.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 230121133 is about 15169.7439991583. The cubic root of 230121133 is about 612.8001099335.

Adding to 230121133 its reverse (331121032), we get a palindrome (561242165).

The spelling of 230121133 in words is "two hundred thirty million, one hundred twenty-one thousand, one hundred thirty-three".