12140220 has 96 divisors (see below), whose sum is σ = 35997696. Its totient is φ = 3052800.

The previous prime is 12140201. The next prime is 12140231. The reversal of 12140220 is 2204121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12140196 and 12140205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113407 + ... + 113513.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

Almost surely, 2^12140220 is an apocalyptic number.

12140220 is a gapful number since it is divisible by the number (10) 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 12140220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17998848).

12140220 is an abundant number, since it is smaller than the sum of its proper divisors (23857476).

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

12140220 is a wasteful number, since it uses less digits than its factorization.

12140220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12140220 is about 3484.2818485306. The cubic root of 12140220 is about 229.8311299813.

Adding to 12140220 its reverse (2204121), we get a palindrome (14344341).

The spelling of 12140220 in words is "twelve million, one hundred forty thousand, two hundred twenty".