11101122220 has 12 divisors (see below), whose sum is σ = 23312356704. Its totient is φ = 4440448880.

The previous prime is 11101122211. The next prime is 11101122259. The reversal of 11101122220 is 2222110111.

It is a self number, because there is not a number n which added to its sum of digits gives 11101122220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277528036 + ... + 277528075.

It is an arithmetic number, because the mean of its divisors is an integer number (1942696392).

Almost surely, 2^11101122220 is an apocalyptic number.

11101122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101122220 is an abundant number, since it is smaller than the sum of its proper divisors (12211234484).

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

11101122220 is a wasteful number, since it uses less digits than its factorization.

11101122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555056120 (or 555056118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11101122220 its reverse (2222110111), we get a palindrome (13323232331).

The spelling of 11101122220 in words is "eleven billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty".