11121503660 has 96 divisors (see below), whose sum is σ = 24845812992. Its totient is φ = 4175781120.

The previous prime is 11121503641. The next prime is 11121503663. The reversal of 11121503660 is 6630512111.

It is not an unprimeable number, because it can be changed into a prime (11121503663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2638955 + ... + 2643165.

It is an arithmetic number, because the mean of its divisors is an integer number (258810552).

Almost surely, 2^11121503660 is an apocalyptic number.

11121503660 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 11121503660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12422906496).

11121503660 is an abundant number, since it is smaller than the sum of its proper divisors (13724309332).

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

11121503660 is a wasteful number, since it uses less digits than its factorization.

11121503660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383 (or 4381 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 11121503660 in words is "eleven billion, one hundred twenty-one million, five hundred three thousand, six hundred sixty".