121128366 has 32 divisors (see below), whose sum is σ = 256981248. Its totient is φ = 37930880.

The previous prime is 121128341. The next prime is 121128379. The reversal of 121128366 is 663821121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98431 + ... + 99653.

It is an arithmetic number, because the mean of its divisors is an integer number (8030664).

Almost surely, 2^121128366 is an apocalyptic number.

121128366 is an abundant number, since it is smaller than the sum of its proper divisors (135852882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121128366 is a wasteful number, since it uses less digits than its factorization.

121128366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216.

The product of its digits is 3456, while the sum is 30.

The square root of 121128366 is about 11005.8332714974. The cubic root of 121128366 is about 494.7835886976.

Adding to 121128366 its reverse (663821121), we get a palindrome (784949487).

The spelling of 121128366 in words is "one hundred twenty-one million, one hundred twenty-eight thousand, three hundred sixty-six".