120121533 has 12 divisors (see below), whose sum is σ = 198295968. Its totient is φ = 68640840.

The previous prime is 120121531. The next prime is 120121537. The reversal of 120121533 is 335121021.

120121533 is a `hidden beast` number, since 12 + 0 + 121 + 533 = 666.

It is not a de Polignac number, because 120121533 - 2¹ = 120121531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 953283 + ... + 953408.

It is an arithmetic number, because the mean of its divisors is an integer number (16524664).

Almost surely, 2^120121533 is an apocalyptic number.

It is an amenable number.

120121533 is a deficient number, since it is larger than the sum of its proper divisors (78174435).

120121533 is a wasteful number, since it uses less digits than its factorization.

120121533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906704 (or 1906701 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 120121533 is about 10959.9969434302. The cubic root of 120121533 is about 493.4088732127.

Adding to 120121533 its reverse (335121021), we get a palindrome (455242554).

The spelling of 120121533 in words is "one hundred twenty million, one hundred twenty-one thousand, five hundred thirty-three".