12101223 has 4 divisors (see below), whose sum is σ = 16134968. Its totient is φ = 8067480.

The previous prime is 12101179. The next prime is 12101227. The reversal of 12101223 is 32210121.

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

It is not a de Polignac number, because 12101223 - 2¹⁶ = 12035687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101199 and 12101208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2016868 + ... + 2016873.

It is an arithmetic number, because the mean of its divisors is an integer number (4033742).

Almost surely, 2^12101223 is an apocalyptic number.

12101223 is a deficient number, since it is larger than the sum of its proper divisors (4033745).

12101223 is an equidigital number, since it uses as much as digits as its factorization.

12101223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033744.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12101223 is about 3478.6812156333. The cubic root of 12101223 is about 229.5847769917.

Adding to 12101223 its reverse (32210121), we get a palindrome (44311344).

The spelling of 12101223 in words is "twelve million, one hundred one thousand, two hundred twenty-three".