11011021220320 has 96 divisors (see below), whose sum is σ = 28778100857856. Its totient is φ = 3947613196800.

The previous prime is 11011021220299. The next prime is 11011021220321. The reversal of 11011021220320 is 2302212011011.

It is a super-3 number, since 3×11011021220320³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 11011021220294 and 11011021220303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011021220321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43933224 + ... + 44183143.

It is an arithmetic number, because the mean of its divisors is an integer number (299771883936).

Almost surely, 2^{11011021220320} is an apocalyptic number.

11011021220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011021220320 is an abundant number, since it is smaller than the sum of its proper divisors (17767079637536).

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

11011021220320 is a wasteful number, since it uses less digits than its factorization.

11011021220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88116464 (or 88116456 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11011021220320 its reverse (2302212011011), we get a palindrome (13313233231331).

The spelling of 11011021220320 in words is "eleven trillion, eleven billion, twenty-one million, two hundred twenty thousand, three hundred twenty".