1111221112 has 16 divisors (see below), whose sum is σ = 2084059800. Its totient is φ = 555471840.

The previous prime is 1111221109. The next prime is 1111221113. The reversal of 1111221112 is 2111221111.

It is a happy number.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1111221092 and 1111221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111221113) 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, 21939 + ... + 51997.

Almost surely, 2^1111221112 is an apocalyptic number.

It is an amenable number.

1111221112 is a deficient number, since it is larger than the sum of its proper divisors (972838688).

1111221112 is a wasteful number, since it uses less digits than its factorization.

1111221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34686 (or 34682 counting only the distinct ones).

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

The square root of 1111221112 is about 33334.9833058305. The cubic root of 1111221112 is about 1035.7783473572.

Adding to 1111221112 its reverse (2111221111), we get a palindrome (3222442223).

Subtracting 1111221112 from its reverse (2111221111), we obtain a palindrome (999999999).

The spelling of 1111221112 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".