11221100200020 has 48 divisors (see below), whose sum is σ = 32785127544960. Its totient is φ = 2862193673856.

The previous prime is 11221100199977. The next prime is 11221100200031. The reversal of 11221100200020 is 2000200112211.

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 = 11221100199969 and 11221100200005.

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, 4065614635 + ... + 4065617394.

It is an arithmetic number, because the mean of its divisors is an integer number (683023490520).

Almost surely, 2^{11221100200020} is an apocalyptic number.

11221100200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221100200020 is an abundant number, since it is smaller than the sum of its proper divisors (21564027344940).

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

11221100200020 is a wasteful number, since it uses less digits than its factorization.

11221100200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131232064 (or 8131232062 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11221100200020 its reverse (2000200112211), we get a palindrome (13221300312231).

The spelling of 11221100200020 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, two hundred thousand, twenty".