121331133 has 24 divisors (see below), whose sum is σ = 218502336. Its totient is φ = 63028800.

The previous prime is 121331113. The next prime is 121331153. The reversal of 121331133 is 331133121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121331113) and next prime (121331153).

It is not a de Polignac number, because 121331133 - 2⁶ = 121331069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331113) 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 23 ways as a sum of consecutive naturals, for example, 86848 + ... + 88233.

It is an arithmetic number, because the mean of its divisors is an integer number (9104264).

Almost surely, 2^121331133 is an apocalyptic number.

It is an amenable number.

121331133 is a deficient number, since it is larger than the sum of its proper divisors (97171203).

121331133 is a wasteful number, since it uses less digits than its factorization.

121331133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175105 (or 175102 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 121331133 is about 11015.0412164458. The cubic root of 121331133 is about 495.0595214621.

Adding to 121331133 its reverse (331133121), we get a palindrome (452464254).

The spelling of 121331133 in words is "one hundred twenty-one million, three hundred thirty-one thousand, one hundred thirty-three".