12211423 has 16 divisors (see below), whose sum is σ = 14955840. Its totient is φ = 9732096.

The previous prime is 12211421. The next prime is 12211447. The reversal of 12211423 is 32411221.

It is a cyclic number.

It is not a de Polignac number, because 12211423 - 2¹ = 12211421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211397 and 12211406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10015 + ... + 11167.

It is an arithmetic number, because the mean of its divisors is an integer number (934740).

Almost surely, 2^12211423 is an apocalyptic number.

12211423 is a deficient number, since it is larger than the sum of its proper divisors (2744417).

12211423 is a wasteful number, since it uses less digits than its factorization.

12211423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266.

The product of its digits is 96, while the sum is 16.

The square root of 12211423 is about 3494.4846544233. The cubic root of 12211423 is about 230.2795781036.

Adding to 12211423 its reverse (32411221), we get a palindrome (44622644).

The spelling of 12211423 in words is "twelve million, two hundred eleven thousand, four hundred twenty-three".