11220023113220 has 48 divisors (see below), whose sum is σ = 23774061690288. Its totient is φ = 4447637483520.

The previous prime is 11220023113213. The next prime is 11220023113283. The reversal of 11220023113220 is 2231132002211.

It can be written as a sum of positive squares in 8 ways, for example, as 1703254687744 + 9516768425476 = 1305088^2 + 3084926^2 .

It is a super-2 number, since 2×11220023113220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11220023113192 and 11220023113201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15134810 + ... + 15858830.

It is an arithmetic number, because the mean of its divisors is an integer number (495292951881).

Almost surely, 2^{11220023113220} is an apocalyptic number.

11220023113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220023113220 is an abundant number, since it is smaller than the sum of its proper divisors (12554038577068).

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

11220023113220 is a wasteful number, since it uses less digits than its factorization.

11220023113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731000 (or 730998 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11220023113220 its reverse (2231132002211), we get a palindrome (13451155115431).

The spelling of 11220023113220 in words is "eleven trillion, two hundred twenty billion, twenty-three million, one hundred thirteen thousand, two hundred twenty".