11011110011220 has 48 divisors (see below), whose sum is σ = 33633936036288. Its totient is φ = 2669360002560.

The previous prime is 11011110011201. The next prime is 11011110011243. The reversal of 11011110011220 is 2211001111011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11011110011196 and 11011110011205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8341749349 + ... + 8341750668.

It is an arithmetic number, because the mean of its divisors is an integer number (700707000756).

Almost surely, 2^{11011110011220} is an apocalyptic number.

11011110011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011110011220 is an abundant number, since it is smaller than the sum of its proper divisors (22622826025068).

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

11011110011220 is a wasteful number, since it uses less digits than its factorization.

11011110011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16683500040 (or 16683500038 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11011110011220 its reverse (2211001111011), we get a palindrome (13222111122231).

The spelling of 11011110011220 in words is "eleven trillion, eleven billion, one hundred ten million, eleven thousand, two hundred twenty".