121423223 has 4 divisors (see below), whose sum is σ = 121673040. Its totient is φ = 121173408.

The previous prime is 121423219. The next prime is 121423241. The reversal of 121423223 is 322324121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121423223 - 2² = 121423219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121423195 and 121423204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121423283) 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 3 ways as a sum of consecutive naturals, for example, 124178 + ... + 125151.

It is an arithmetic number, because the mean of its divisors is an integer number (30418260).

Almost surely, 2^121423223 is an apocalyptic number.

121423223 is a deficient number, since it is larger than the sum of its proper divisors (249817).

121423223 is an equidigital number, since it uses as much as digits as its factorization.

121423223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249816.

The product of its digits is 576, while the sum is 20.

The square root of 121423223 is about 11019.2206167224. The cubic root of 121423223 is about 495.1847393976.

Adding to 121423223 its reverse (322324121), we get a palindrome (443747344).

The spelling of 121423223 in words is "one hundred twenty-one million, four hundred twenty-three thousand, two hundred twenty-three".