1121340980 has 48 divisors (see below), whose sum is σ = 2416962240. Its totient is φ = 436742400.

The previous prime is 1121340977. The next prime is 1121340989. The reversal of 1121340980 is 890431211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121340989) 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, 565631 + ... + 567609.

It is an arithmetic number, because the mean of its divisors is an integer number (50353380).

Almost surely, 2^1121340980 is an apocalyptic number.

1121340980 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 1121340980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208481120).

1121340980 is an abundant number, since it is smaller than the sum of its proper divisors (1295621260).

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

1121340980 is a wasteful number, since it uses less digits than its factorization.

1121340980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720 (or 2718 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1121340980 is about 33486.4297887965. The cubic root of 1121340980 is about 1038.9131211818.

The spelling of 1121340980 in words is "one billion, one hundred twenty-one million, three hundred forty thousand, nine hundred eighty".