11011111210220 has 48 divisors (see below), whose sum is σ = 25235124717600. Its totient is φ = 4002505528320.

The previous prime is 11011111210213. The next prime is 11011111210223. The reversal of 11011111210220 is 2201211111011.

It is a junction number, because it is equal to n+sod(n) for n = 11011111210195 and 11011111210204.

It is not an unprimeable number, because it can be changed into a prime (11011111210223) by changing a digit.

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, 9017915 + ... + 10165874.

It is an arithmetic number, because the mean of its divisors is an integer number (525731764950).

Almost surely, 2^{11011111210220} is an apocalyptic number.

11011111210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011111210220 is an abundant number, since it is smaller than the sum of its proper divisors (14224013507380).

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

11011111210220 is a wasteful number, since it uses less digits than its factorization.

11011111210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19186418 (or 19186416 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11011111210220 its reverse (2201211111011), we get a palindrome (13212322321231).

The spelling of 11011111210220 in words is "eleven trillion, eleven billion, one hundred eleven million, two hundred ten thousand, two hundred twenty".