121535153 has 8 divisors (see below), whose sum is σ = 128130720. Its totient is φ = 114959520.

The previous prime is 121535131. The next prime is 121535177. The reversal of 121535153 is 351535121.

It is a happy number.

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 121535153 - 2¹⁴ = 121518769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121535123) 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, 8501 + ... + 17757.

It is an arithmetic number, because the mean of its divisors is an integer number (16016340).

Almost surely, 2^121535153 is an apocalyptic number.

It is an amenable number.

121535153 is a deficient number, since it is larger than the sum of its proper divisors (6595567).

121535153 is an equidigital number, since it uses as much as digits as its factorization.

121535153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9967.

The product of its digits is 2250, while the sum is 26.

The square root of 121535153 is about 11024.2982996652. The cubic root of 121535153 is about 495.3368492503.

The spelling of 121535153 in words is "one hundred twenty-one million, five hundred thirty-five thousand, one hundred fifty-three".