111221001204 has 12 divisors (see below), whose sum is σ = 259515669504. Its totient is φ = 37073667064.

The previous prime is 111221001187. The next prime is 111221001209. The reversal of 111221001204 is 402100122111.

111221001204 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×111221001204² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221001209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4634208372 + ... + 4634208395.

It is an arithmetic number, because the mean of its divisors is an integer number (21626305792).

Almost surely, 2^111221001204 is an apocalyptic number.

It is an amenable number.

111221001204 is an abundant number, since it is smaller than the sum of its proper divisors (148294668300).

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

111221001204 is a wasteful number, since it uses less digits than its factorization.

111221001204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268416774 (or 9268416772 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111221001204 its reverse (402100122111), we get a palindrome (513321123315).

The spelling of 111221001204 in words is "one hundred eleven billion, two hundred twenty-one million, one thousand, two hundred four".