12210023 has 4 divisors (see below), whose sum is σ = 13954320. Its totient is φ = 10465728.

The previous prime is 12210019. The next prime is 12210041. The reversal of 12210023 is 32001221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32001221 = 7 ⋅4571603.

It is not a de Polignac number, because 12210023 - 2² = 12210019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12209986 and 12210013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872138 + ... + 872151.

It is an arithmetic number, because the mean of its divisors is an integer number (3488580).

Almost surely, 2^12210023 is an apocalyptic number.

12210023 is a deficient number, since it is larger than the sum of its proper divisors (1744297).

12210023 is an equidigital number, since it uses as much as digits as its factorization.

12210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744296.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12210023 is about 3494.2843330216. The cubic root of 12210023 is about 230.2707774986.

Adding to 12210023 its reverse (32001221), we get a palindrome (44211244).

The spelling of 12210023 in words is "twelve million, two hundred ten thousand, twenty-three".