111242220404 has 18 divisors (see below), whose sum is σ = 226457377650. Its totient is φ = 47675237232.

The previous prime is 111242220403. The next prime is 111242220437. The reversal of 111242220404 is 404022242111.

It can be written as a sum of positive squares in only one way, i.e., 111190236304 + 51984100 = 333452^2 + 7210^2 .

It is a super-2 number, since 2×111242220404² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111242220404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111242220403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283780979 + ... + 283781370.

It is an arithmetic number, because the mean of its divisors is an integer number (12580965425).

Almost surely, 2^111242220404 is an apocalyptic number.

111242220404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

111242220404 is an abundant number, since it is smaller than the sum of its proper divisors (115215157246).

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

111242220404 is a wasteful number, since it uses less digits than its factorization.

111242220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567562367 (or 567562358 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 111242220404 its reverse (404022242111), we get a palindrome (515264462515).

The spelling of 111242220404 in words is "one hundred eleven billion, two hundred forty-two million, two hundred twenty thousand, four hundred four".