11201111000020 has 12 divisors (see below), whose sum is σ = 23522333100084. Its totient is φ = 4480444400000.

The previous prime is 11201111000017. The next prime is 11201111000143. The reversal of 11201111000020 is 2000011110211.

It can be written as a sum of positive squares in 2 ways, for example, as 1530827154756 + 9670283845264 = 1237266^2 + 3109708^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11201110999970 and 11201111000006.

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, 280027774981 + ... + 280027775020.

It is an arithmetic number, because the mean of its divisors is an integer number (1960194425007).

Almost surely, 2^{11201111000020} is an apocalyptic number.

11201111000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201111000020 is an abundant number, since it is smaller than the sum of its proper divisors (12321222100064).

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

11201111000020 is a wasteful number, since it uses less digits than its factorization.

11201111000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560055550010 (or 560055550008 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11201111000020 its reverse (2000011110211), we get a palindrome (13201122110231).

The spelling of 11201111000020 in words is "eleven trillion, two hundred one billion, one hundred eleven million, twenty", and thus it is an aban number.