11111320000 has 140 divisors (see below), whose sum is σ = 30058421976. Its totient is φ = 4040320000.

The previous prime is 11111319997. The next prime is 11111320009. The reversal of 11111320000 is 2311111.

It is a super-2 number, since 2×11111320000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111320009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 427374 + ... + 452626.

Almost surely, 2^11111320000 is an apocalyptic number.

11111320000 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 11111320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15029210988).

11111320000 is an abundant number, since it is smaller than the sum of its proper divisors (18947101976).

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

11111320000 is an equidigital number, since it uses as much as digits as its factorization.

11111320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25296 (or 25271 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11111320000 its reverse (2311111), we get a palindrome (11113631111).

The spelling of 11111320000 in words is "eleven billion, one hundred eleven million, three hundred twenty thousand".