12020044420 has 24 divisors (see below), whose sum is σ = 25335941400. Its totient is φ = 4790141952.

The previous prime is 12020044409. The next prime is 12020044451. The reversal of 12020044420 is 2444002021.

It can be written as a sum of positive squares in 4 ways, for example, as 123343236 + 11896701184 = 11106^2 + 109072^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111725 + ... + 1122484.

It is an arithmetic number, because the mean of its divisors is an integer number (1055664225).

Almost surely, 2^12020044420 is an apocalyptic number.

12020044420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020044420 is an abundant number, since it is smaller than the sum of its proper divisors (13315896980).

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

12020044420 is a wasteful number, since it uses less digits than its factorization.

12020044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234487 (or 2234485 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 12020044420 its reverse (2444002021), we get a palindrome (14464046441).

The spelling of 12020044420 in words is "twelve billion, twenty million, forty-four thousand, four hundred twenty".