111223664556 has 48 divisors (see below), whose sum is σ = 272207018496. Its totient is φ = 35305032384.

The previous prime is 111223664537. The next prime is 111223664561. The reversal of 111223664556 is 655466322111.

111223664556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×111223664556² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2644066 + ... + 2685801.

It is an arithmetic number, because the mean of its divisors is an integer number (5670979552).

Almost surely, 2^111223664556 is an apocalyptic number.

It is an amenable number.

111223664556 is an abundant number, since it is smaller than the sum of its proper divisors (160983353940).

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

111223664556 is a wasteful number, since it uses less digits than its factorization.

111223664556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329958 (or 5329956 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

Adding to 111223664556 its reverse (655466322111), we get a palindrome (766689986667).

The spelling of 111223664556 in words is "one hundred eleven billion, two hundred twenty-three million, six hundred sixty-four thousand, five hundred fifty-six".