1111121112 has 16 divisors (see below), whose sum is σ = 2777802840. Its totient is φ = 370373696.

The previous prime is 1111121087. The next prime is 1111121113. The reversal of 1111121112 is 2111211111.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111121113) 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, 23148333 + ... + 23148380.

Almost surely, 2^1111121112 is an apocalyptic number.

1111121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111121112 is an abundant number, since it is smaller than the sum of its proper divisors (1666681728).

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

1111121112 is a wasteful number, since it uses less digits than its factorization.

1111121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46296722 (or 46296718 counting only the distinct ones).

The product of its digits is 4, while the sum is 12.

The square root of 1111121112 is about 33333.4833463291. The cubic root of 1111121112 is about 1035.7472761507.

Adding to 1111121112 its reverse (2111211111), we get a palindrome (3222332223).

It can be divided in two parts, 11111 and 21112, that multiplied together give a palindrome (234575432).

The spelling of 1111121112 in words is "one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twelve".