121533133 has 2 divisors, whose sum is σ = 121533134. Its totient is φ = 121533132.

The previous prime is 121533107. The next prime is 121533157. The reversal of 121533133 is 331335121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84603204 + 36929929 = 9198^2 + 6077^2 .

It is a cyclic number.

It is not a de Polignac number, because 121533133 - 2²⁵ = 87978701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121533163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60766566 + 60766567.

It is an arithmetic number, because the mean of its divisors is an integer number (60766567).

Almost surely, 2^121533133 is an apocalyptic number.

It is an amenable number.

121533133 is a deficient number, since it is larger than the sum of its proper divisors (1).

121533133 is an equidigital number, since it uses as much as digits as its factorization.

121533133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 22.

The square root of 121533133 is about 11024.2066834761. The cubic root of 121533133 is about 495.3341049524.

Adding to 121533133 its reverse (331335121), we get a palindrome (452868254).

The spelling of 121533133 in words is "one hundred twenty-one million, five hundred thirty-three thousand, one hundred thirty-three".