121533101 has 8 divisors (see below), whose sum is σ = 129683520. Its totient is φ = 113558112.

The previous prime is 121533091. The next prime is 121533107. The reversal of 121533101 is 101335121.

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

It is a cyclic number.

It is not a de Polignac number, because 121533101 - 2⁶ = 121533037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121533101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121533107) 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 in 7 ways as a sum of consecutive naturals, for example, 42425 + ... + 45198.

It is an arithmetic number, because the mean of its divisors is an integer number (16210440).

Almost surely, 2^121533101 is an apocalyptic number.

It is an amenable number.

121533101 is a deficient number, since it is larger than the sum of its proper divisors (8150419).

121533101 is an equidigital number, since it uses as much as digits as its factorization.

121533101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87715.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 121533101 is about 11024.2052321244. The cubic root of 121533101 is about 495.3340614782.

Adding to 121533101 its reverse (101335121), we get a palindrome (222868222).

The spelling of 121533101 in words is "one hundred twenty-one million, five hundred thirty-three thousand, one hundred one".