12220444044 has 18 divisors (see below), whose sum is σ = 30890566980. Its totient is φ = 4073481336.

The previous prime is 12220444007. The next prime is 12220444057. The reversal of 12220444044 is 44044402221.

12220444044 is a `hidden beast` number, since 12 + 2 + 204 + 440 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 12220443999 and 12220444017.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169728354 + ... + 169728425.

It is an arithmetic number, because the mean of its divisors is an integer number (1716142610).

Almost surely, 2^12220444044 is an apocalyptic number.

It is an amenable number.

12220444044 is an abundant number, since it is smaller than the sum of its proper divisors (18670122936).

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

12220444044 is a wasteful number, since it uses less digits than its factorization.

12220444044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339456789 (or 339456784 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 12220444044 its reverse (44044402221), we get a palindrome (56264846265).

The spelling of 12220444044 in words is "twelve billion, two hundred twenty million, four hundred forty-four thousand, forty-four".