121330223 has 12 divisors (see below), whose sum is σ = 141675552. Its totient is φ = 103602240.

The previous prime is 121330217. The next prime is 121330277. The reversal of 121330223 is 322033121.

It is not a de Polignac number, because 121330223 - 2²⁶ = 54221359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121330213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8711 + ... + 17847.

It is an arithmetic number, because the mean of its divisors is an integer number (11806296).

Almost surely, 2^121330223 is an apocalyptic number.

121330223 is a deficient number, since it is larger than the sum of its proper divisors (20345329).

121330223 is an equidigital number, since it uses as much as digits as its factorization.

121330223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9422 (or 9415 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 121330223 is about 11014.9999092147. Note that the first 4 decimals coincide. The cubic root of 121330223 is about 495.0582837877.

Adding to 121330223 its reverse (322033121), we get a palindrome (443363344).

The spelling of 121330223 in words is "one hundred twenty-one million, three hundred thirty thousand, two hundred twenty-three".