121128353 has 8 divisors (see below), whose sum is σ = 124602240. Its totient is φ = 117691920.

The previous prime is 121128341. The next prime is 121128379. The reversal of 121128353 is 353821121.

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 121128353 - 2⁶ = 121128289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121128313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2738 + ... + 15803.

It is an arithmetic number, because the mean of its divisors is an integer number (15575280).

Almost surely, 2^121128353 is an apocalyptic number.

It is an amenable number.

121128353 is a deficient number, since it is larger than the sum of its proper divisors (3473887).

121128353 is a wasteful number, since it uses less digits than its factorization.

121128353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18727.

The product of its digits is 1440, while the sum is 26.

The square root of 121128353 is about 11005.8326809015. The cubic root of 121128353 is about 494.7835709968.

Adding to 121128353 its reverse (353821121), we get a palindrome (474949474).

The spelling of 121128353 in words is "one hundred twenty-one million, one hundred twenty-eight thousand, three hundred fifty-three".