11220404124 has 24 divisors (see below), whose sum is σ = 27720998928. Its totient is φ = 3520126720.

The previous prime is 11220404057. The next prime is 11220404147. The reversal of 11220404124 is 42140402211.

It is a self number, because there is not a number n which added to its sum of digits gives 11220404124.

It is a congruent number.

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, 27500787 + ... + 27501194.

It is an arithmetic number, because the mean of its divisors is an integer number (1155041622).

Almost surely, 2^11220404124 is an apocalyptic number.

It is an amenable number.

11220404124 is an abundant number, since it is smaller than the sum of its proper divisors (16500594804).

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

11220404124 is a wasteful number, since it uses less digits than its factorization.

11220404124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55002005 (or 55002003 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 11220404124 its reverse (42140402211), we get a palindrome (53360806335).

The spelling of 11220404124 in words is "eleven billion, two hundred twenty million, four hundred four thousand, one hundred twenty-four".