12203136 has 160 divisors (see below), whose sum is σ = 39988080. Its totient is φ = 3663360.

The previous prime is 12203089. The next prime is 12203137. The reversal of 12203136 is 63130221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12203137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 113995 + ... + 114101.

Almost surely, 2^12203136 is an apocalyptic number.

12203136 is a gapful number since it is divisible by the number (16) 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 12203136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19994040).

12203136 is an abundant number, since it is smaller than the sum of its proper divisors (27784944).

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

12203136 is a wasteful number, since it uses less digits than its factorization.

12203136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12203136 is about 3493.2987275640. The cubic root of 12203136 is about 230.2274750111.

Adding to 12203136 its reverse (63130221), we get a palindrome (75333357).

It can be divided in two parts, 1220 and 3136, that added together give a square (4356 = 66²).

The spelling of 12203136 in words is "twelve million, two hundred three thousand, one hundred thirty-six".