1121010720 has 96 divisors (see below), whose sum is σ = 3557167488. Its totient is φ = 296736768.

The previous prime is 1121010707. The next prime is 1121010721. The reversal of 1121010720 is 270101211.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×1121010720³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121010720.

It is not an unprimeable number, because it can be changed into a prime (1121010721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57237 + ... + 74283.

It is an arithmetic number, because the mean of its divisors is an integer number (37053828).

Almost surely, 2^1121010720 is an apocalyptic number.

1121010720 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 1121010720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778583744).

1121010720 is an abundant number, since it is smaller than the sum of its proper divisors (2436156768).

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

1121010720 is a wasteful number, since it uses less digits than its factorization.

1121010720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17202 (or 17194 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 1121010720 is about 33481.4981743649. The cubic root of 1121010720 is about 1038.8111167829.

Adding to 1121010720 its reverse (270101211), we get a palindrome (1391111931).

The spelling of 1121010720 in words is "one billion, one hundred twenty-one million, ten thousand, seven hundred twenty".