12220044 has 12 divisors (see below), whose sum is σ = 28513464. Its totient is φ = 4073344.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220044 is 44002221.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509157 + ... + 509180.

It is an arithmetic number, because the mean of its divisors is an integer number (2376122).

Almost surely, 2^12220044 is an apocalyptic number.

It is an amenable number.

12220044 is an abundant number, since it is smaller than the sum of its proper divisors (16293420).

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

12220044 is a wasteful number, since it uses less digits than its factorization.

12220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018344 (or 1018342 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 12220044 is about 3495.7179520093. The cubic root of 12220044 is about 230.3337561533. Note that the first 3 decimals are identical.

Adding to 12220044 its reverse (44002221), we get a palindrome (56222265).

The spelling of 12220044 in words is "twelve million, two hundred twenty thousand, forty-four".