11001323220 has 96 divisors (see below), whose sum is σ = 33497307648. Its totient is φ = 2686482432.

The previous prime is 11001323213. The next prime is 11001323273. The reversal of 11001323220 is 2232310011.

It is a super-2 number, since 2×11001323220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11001323220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108012 + ... + 183491.

It is an arithmetic number, because the mean of its divisors is an integer number (348930288).

Almost surely, 2^11001323220 is an apocalyptic number.

11001323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001323220 is an abundant number, since it is smaller than the sum of its proper divisors (22495984428).

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

11001323220 is a wasteful number, since it uses less digits than its factorization.

11001323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291569 (or 291567 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 11001323220 its reverse (2232310011), we get a palindrome (13233633231).

The spelling of 11001323220 in words is "eleven billion, one million, three hundred twenty-three thousand, two hundred twenty".