1121013440 has 112 divisors (see below), whose sum is σ = 2750771232. Its totient is φ = 434896896.

The previous prime is 1121013437. The next prime is 1121013461. The reversal of 1121013440 is 443101211.

It is a happy number.

It is a super-2 number, since 2×1121013440² = 2513342265321267200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3536162 + ... + 3536478.

Almost surely, 2^1121013440 is an apocalyptic number.

1121013440 is a gapful number since it is divisible by the number (10) 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 1121013440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375385616).

1121013440 is an abundant number, since it is smaller than the sum of its proper divisors (1629757792).

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

1121013440 is a wasteful number, since it uses less digits than its factorization.

1121013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1121013440 is about 33481.5387937890. The cubic root of 1121013440 is about 1038.8119569664.

Adding to 1121013440 its reverse (443101211), we get a palindrome (1564114651).

The spelling of 1121013440 in words is "one billion, one hundred twenty-one million, thirteen thousand, four hundred forty".