11101200020 has 12 divisors (see below), whose sum is σ = 23312520084. Its totient is φ = 4440480000.

The previous prime is 11101200013. The next prime is 11101200041. The reversal of 11101200020 is 2000210111.

It can be written as a sum of positive squares in 2 ways, for example, as 5862046096 + 5239153924 = 76564^2 + 72382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11101199980 and 11101200007.

It is a congruent number.

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, 277529981 + ... + 277530020.

It is an arithmetic number, because the mean of its divisors is an integer number (1942710007).

Almost surely, 2^11101200020 is an apocalyptic number.

11101200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101200020 is an abundant number, since it is smaller than the sum of its proper divisors (12211320064).

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

11101200020 is a wasteful number, since it uses less digits than its factorization.

11101200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555060010 (or 555060008 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11101200020 its reverse (2000210111), we get a palindrome (13101410131).

The spelling of 11101200020 in words is "eleven billion, one hundred one million, two hundred thousand, twenty".