121344153 has 16 divisors (see below), whose sum is σ = 185506176. Its totient is φ = 69114240.

The previous prime is 121344131. The next prime is 121344161. The reversal of 121344153 is 351443121.

It is a happy number.

It is not a de Polignac number, because 121344153 - 2⁸ = 121343897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121344163) 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, 2658 + ... + 15803.

It is an arithmetic number, because the mean of its divisors is an integer number (11594136).

Almost surely, 2^121344153 is an apocalyptic number.

It is an amenable number.

121344153 is a deficient number, since it is larger than the sum of its proper divisors (64162023).

121344153 is a wasteful number, since it uses less digits than its factorization.

121344153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18784.

The product of its digits is 1440, while the sum is 24.

The square root of 121344153 is about 11015.6322106359. The cubic root of 121344153 is about 495.0772290481.

Adding to 121344153 its reverse (351443121), we get a palindrome (472787274).

The spelling of 121344153 in words is "one hundred twenty-one million, three hundred forty-four thousand, one hundred fifty-three".