11221120200020 has 12 divisors (see below), whose sum is σ = 23564352420084. Its totient is φ = 4488448080000.

The previous prime is 11221120199999. The next prime is 11221120200133. The reversal of 11221120200020 is 2000202112211.

It can be written as a sum of positive squares in 2 ways, for example, as 2784639788176 + 8436480411844 = 1668724^2 + 2904562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11221120199968 and 11221120200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280528004981 + ... + 280528005020.

It is an arithmetic number, because the mean of its divisors is an integer number (1963696035007).

Almost surely, 2^{11221120200020} is an apocalyptic number.

11221120200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221120200020 is an abundant number, since it is smaller than the sum of its proper divisors (12343232220064).

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

11221120200020 is a wasteful number, since it uses less digits than its factorization.

11221120200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561056010010 (or 561056010008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11221120200020 its reverse (2000202112211), we get a palindrome (13221322312231).

The spelling of 11221120200020 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty million, two hundred thousand, twenty".