1110111221200 has 30 divisors (see below), whose sum is σ = 2667042209894. Its totient is φ = 444044488320.

The previous prime is 1110111221189. The next prime is 1110111221203. The reversal of 1110111221200 is 21221110111.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22395721104 + 1087715500096 = 149652^2 + 1042936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110111221203) 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, 1387638627 + ... + 1387639426.

Almost surely, 2^{1110111221200} is an apocalyptic number.

1110111221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1110111221200 is an abundant number, since it is smaller than the sum of its proper divisors (1556930988694).

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

1110111221200 is a wasteful number, since it uses less digits than its factorization.

1110111221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775278071 (or 2775278060 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1110111221200 its reverse (21221110111), we get a palindrome (1131332331311).

The spelling of 1110111221200 in words is "one trillion, one hundred ten billion, one hundred eleven million, two hundred twenty-one thousand, two hundred".