121533153 has 16 divisors (see below), whose sum is σ = 196087680. Its totient is φ = 65362176.

The previous prime is 121533133. The next prime is 121533157. The reversal of 121533153 is 351335121.

It is not a de Polignac number, because 121533153 - 2⁹ = 121532641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121533157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169858 + ... + 170571.

It is an arithmetic number, because the mean of its divisors is an integer number (12255480).

Almost surely, 2^121533153 is an apocalyptic number.

It is an amenable number.

121533153 is a deficient number, since it is larger than the sum of its proper divisors (74554527).

121533153 is a wasteful number, since it uses less digits than its factorization.

121533153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340456.

The product of its digits is 1350, while the sum is 24.

The square root of 121533153 is about 11024.2075905709. The cubic root of 121533153 is about 495.3341321239.

Adding to 121533153 its reverse (351335121), we get a palindrome (472868274).

The spelling of 121533153 in words is "one hundred twenty-one million, five hundred thirty-three thousand, one hundred fifty-three".