11121110210220 has 48 divisors (see below), whose sum is σ = 31140143367648. Its totient is φ = 2965530839040.

The previous prime is 11121110210219. The next prime is 11121110210257. The reversal of 11121110210220 is 2201201112111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11121110210220.

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, 1250119 + ... + 4879038.

It is an arithmetic number, because the mean of its divisors is an integer number (648752986826).

Almost surely, 2^{11121110210220} is an apocalyptic number.

11121110210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121110210220 is an abundant number, since it is smaller than the sum of its proper divisors (20019033157428).

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

11121110210220 is a wasteful number, since it uses less digits than its factorization.

11121110210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159410 (or 6159408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11121110210220 its reverse (2201201112111), we get a palindrome (13322311322331).

The spelling of 11121110210220 in words is "eleven trillion, one hundred twenty-one billion, one hundred ten million, two hundred ten thousand, two hundred twenty".