11220020320 has 24 divisors (see below), whose sum is σ = 26507298384. Its totient is φ = 4488008064.

The previous prime is 11220020311. The next prime is 11220020327. The reversal of 11220020320 is 2302002211.

It is a self number, because there is not a number n which added to its sum of digits gives 11220020320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220020327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35062404 + ... + 35062723.

It is an arithmetic number, because the mean of its divisors is an integer number (1104470766).

Almost surely, 2^11220020320 is an apocalyptic number.

11220020320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220020320 is an abundant number, since it is smaller than the sum of its proper divisors (15287278064).

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

11220020320 is an equidigital number, since it uses as much as digits as its factorization.

11220020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70125142 (or 70125134 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 11220020320 its reverse (2302002211), we get a palindrome (13522022531).

It can be divided in two parts, 11220020 and 320, that multiplied together give a square (3590406400 = 59920²).

The spelling of 11220020320 in words is "eleven billion, two hundred twenty million, twenty thousand, three hundred twenty".