121505133 has 8 divisors (see below), whose sum is σ = 170533600. Its totient is φ = 76740048.

The previous prime is 121505101. The next prime is 121505141. The reversal of 121505133 is 331505121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121505133 - 2⁵ = 121505101 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 (121505333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065778 + ... + 1065891.

It is an arithmetic number, because the mean of its divisors is an integer number (21316700).

Almost surely, 2^121505133 is an apocalyptic number.

It is an amenable number.

121505133 is a deficient number, since it is larger than the sum of its proper divisors (49028467).

121505133 is a wasteful number, since it uses less digits than its factorization.

121505133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131691.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 121505133 is about 11022.9366776735. The cubic root of 121505133 is about 495.2960620477.

The spelling of 121505133 in words is "one hundred twenty-one million, five hundred five thousand, one hundred thirty-three".