12220032 has 96 divisors (see below), whose sum is σ = 35814240. Its totient is φ = 3688960.

The previous prime is 12220031. The next prime is 12220037. The reversal of 12220032 is 23002221.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (12220031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46333 + ... + 46595.

It is an arithmetic number, because the mean of its divisors is an integer number (373065).

Almost surely, 2^12220032 is an apocalyptic number.

12220032 is a gapful number since it is divisible by the number (12) 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 12220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17907120).

12220032 is an abundant number, since it is smaller than the sum of its proper divisors (23594208).

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

12220032 is a wasteful number, since it uses less digits than its factorization.

12220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12220032 is about 3495.7162356233. The cubic root of 12220032 is about 230.3336807579. Note that the first 3 decimals are identical.

Adding to 12220032 its reverse (23002221), we get a palindrome (35222253).

The spelling of 12220032 in words is "twelve million, two hundred twenty thousand, thirty-two".