11121131320 has 32 divisors (see below), whose sum is σ = 26947357920. Its totient is φ = 4106263680.

The previous prime is 11121131303. The next prime is 11121131401. The reversal of 11121131320 is 2313112111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11121131294 and 11121131303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10692876 + ... + 10693915.

It is an arithmetic number, because the mean of its divisors is an integer number (842104935).

Almost surely, 2^11121131320 is an apocalyptic number.

11121131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121131320 is an abundant number, since it is smaller than the sum of its proper divisors (15826226600).

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

11121131320 is a wasteful number, since it uses less digits than its factorization.

11121131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21386815 (or 21386811 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11121131320 its reverse (2313112111), we get a palindrome (13434243431).

The spelling of 11121131320 in words is "eleven billion, one hundred twenty-one million, one hundred thirty-one thousand, three hundred twenty".