121333133 has 4 divisors (see below), whose sum is σ = 122288640. Its totient is φ = 120377628.

The previous prime is 121333111. The next prime is 121333139. The reversal of 121333133 is 331333121.

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 not a de Polignac number, because 121333133 - 2⁸ = 121332877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121333139) 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, 477563 + ... + 477816.

It is an arithmetic number, because the mean of its divisors is an integer number (30572160).

Almost surely, 2^121333133 is an apocalyptic number.

It is an amenable number.

121333133 is a deficient number, since it is larger than the sum of its proper divisors (955507).

121333133 is an equidigital number, since it uses as much as digits as its factorization.

121333133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955506.

The product of its digits is 486, while the sum is 20.

The square root of 121333133 is about 11015.1320010248. The cubic root of 121333133 is about 495.0622416037.

Adding to 121333133 its reverse (331333121), we get a palindrome (452666254).

The spelling of 121333133 in words is "one hundred twenty-one million, three hundred thirty-three thousand, one hundred thirty-three".