11123201320 has 128 divisors (see below), whose sum is σ = 33038357760. Its totient is φ = 3263016960.

The previous prime is 11123201317. The next prime is 11123201321. The reversal of 11123201320 is 2310232111.

It is a junction number, because it is equal to n+sod(n) for n = 11123201294 and 11123201303.

It is not an unprimeable number, because it can be changed into a prime (11123201321) 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, 53859 + ... + 158578.

It is an arithmetic number, because the mean of its divisors is an integer number (258112170).

Almost surely, 2^11123201320 is an apocalyptic number.

11123201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123201320 is an abundant number, since it is smaller than the sum of its proper divisors (21915156440).

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

11123201320 is a wasteful number, since it uses less digits than its factorization.

11123201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212483 (or 212479 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11123201320 its reverse (2310232111), we get a palindrome (13433433431).

The spelling of 11123201320 in words is "eleven billion, one hundred twenty-three million, two hundred one thousand, three hundred twenty".