1121122112 has 42 divisors (see below), whose sum is σ = 2445377634. Its totient is φ = 509597440.

The previous prime is 1121122073. The next prime is 1121122117. The reversal of 1121122112 is 2112211211.

It can be written as a sum of positive squares in only one way, i.e., 964972096 + 156150016 = 31064^2 + 12496^2 .

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 (1121122117) 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, 64643 + ... + 80130.

It is an arithmetic number, because the mean of its divisors is an integer number (58223277).

Almost surely, 2^1121122112 is an apocalyptic number.

It is an amenable number.

1121122112 is an abundant number, since it is smaller than the sum of its proper divisors (1324255522).

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

1121122112 is a wasteful number, since it uses less digits than its factorization.

1121122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144807 (or 144786 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 1121122112 is about 33483.1616189392. The cubic root of 1121122112 is about 1038.8455236544.

Adding to 1121122112 its reverse (2112211211), we get a palindrome (3233333323).

It can be divided in two parts, 11 and 21122112, that multiplied together give a palindrome (232343232).

The spelling of 1121122112 in words is "one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".