1121402112 has 72 divisors (see below), whose sum is σ = 2991189600. Its totient is φ = 372971520.

The previous prime is 1121402083. The next prime is 1121402119. The reversal of 1121402112 is 2112041211.

It is a junction number, because it is equal to n+sod(n) for n = 1121402091 and 1121402100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121402119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414139 + ... + 416837.

It is an arithmetic number, because the mean of its divisors is an integer number (41544300).

Almost surely, 2^1121402112 is an apocalyptic number.

1121402112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121402112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495594800).

1121402112 is an abundant number, since it is smaller than the sum of its proper divisors (1869787488).

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

1121402112 is an equidigital number, since it uses as much as digits as its factorization.

1121402112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259 (or 3245 counting only the distinct ones).

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

The square root of 1121402112 is about 33487.3425640196. The cubic root of 1121402112 is about 1038.9320002691.

Adding to 1121402112 its reverse (2112041211), we get a palindrome (3233443323).

The spelling of 1121402112 in words is "one billion, one hundred twenty-one million, four hundred two thousand, one hundred twelve".