12213124 has 48 divisors (see below), whose sum is σ = 28062720. Its totient is φ = 4505760.

The previous prime is 12213109. The next prime is 12213127. The reversal of 12213124 is 42131221.

12213124 = T₂₃₂ + T₂₃₃ + ... + T₄₄₀.

12213124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12213098 and 12213107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213127) 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, 4809 + ... + 6895.

It is an arithmetic number, because the mean of its divisors is an integer number (584640).

Almost surely, 2^12213124 is an apocalyptic number.

12213124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12213124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14031360).

12213124 is an abundant number, since it is smaller than the sum of its proper divisors (15849596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213124 is a wasteful number, since it uses less digits than its factorization.

12213124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 2126 counting only the distinct ones).

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

The square root of 12213124 is about 3494.7280294753. The cubic root of 12213124 is about 230.2902699336.

Adding to 12213124 its reverse (42131221), we get a palindrome (54344345).

The spelling of 12213124 in words is "twelve million, two hundred thirteen thousand, one hundred twenty-four".