121128323 has 2 divisors, whose sum is σ = 121128324. Its totient is φ = 121128322.

The previous prime is 121128313. The next prime is 121128341. The reversal of 121128323 is 323821121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121128323 - 2¹⁶ = 121062787 is a prime.

It is not a weakly prime, because it can be changed into another prime (121128313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60564161 + 60564162.

It is an arithmetic number, because the mean of its divisors is an integer number (60564162).

Almost surely, 2^121128323 is an apocalyptic number.

121128323 is a deficient number, since it is larger than the sum of its proper divisors (1).

121128323 is an equidigital number, since it uses as much as digits as its factorization.

121128323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 121128323 is about 11005.8313179878. The cubic root of 121128323 is about 494.7835301489.

Adding to 121128323 its reverse (323821121), we get a palindrome (444949444).

The spelling of 121128323 in words is "one hundred twenty-one million, one hundred twenty-eight thousand, three hundred twenty-three".