11211001320 has 64 divisors (see below), whose sum is σ = 35095317120. Its totient is φ = 2859617024.

The previous prime is 11211001303. The next prime is 11211001349. The reversal of 11211001320 is 2310011211.

11211001320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11211001296 and 11211001305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028219 + ... + 2033738.

It is an arithmetic number, because the mean of its divisors is an integer number (548364330).

Almost surely, 2^11211001320 is an apocalyptic number.

11211001320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211001320 is an abundant number, since it is smaller than the sum of its proper divisors (23884315800).

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

11211001320 is a wasteful number, since it uses less digits than its factorization.

11211001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061994 (or 4061990 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11211001320 its reverse (2310011211), we get a palindrome (13521012531).

The spelling of 11211001320 in words is "eleven billion, two hundred eleven million, one thousand, three hundred twenty".