11023220320 has 144 divisors (see below), whose sum is σ = 30528268848. Its totient is φ = 3750190080.

The previous prime is 11023220311. The next prime is 11023220321. The reversal of 11023220320 is 2302232011.

It is a super-2 number, since 2×11023220320² (a number of 21 digits) contains 22 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 = 11023220294 and 11023220303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11023220321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1021674 + ... + 1032406.

It is an arithmetic number, because the mean of its divisors is an integer number (212001867).

Almost surely, 2^11023220320 is an apocalyptic number.

11023220320 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 11023220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15264134424).

11023220320 is an abundant number, since it is smaller than the sum of its proper divisors (19505048528).

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

11023220320 is a wasteful number, since it uses less digits than its factorization.

11023220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10893 (or 10878 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 11023220320 its reverse (2302232011), we get a palindrome (13325452331).

The spelling of 11023220320 in words is "eleven billion, twenty-three million, two hundred twenty thousand, three hundred twenty".