11001021120220 has 12 divisors (see below), whose sum is σ = 23102144352504. Its totient is φ = 4400408448080.

The previous prime is 11001021120211. The next prime is 11001021120223. The reversal of 11001021120220 is 2202112010011.

It is a self number, because there is not a number n which added to its sum of digits gives 11001021120220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001021120223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275025527986 + ... + 275025528025.

It is an arithmetic number, because the mean of its divisors is an integer number (1925178696042).

Almost surely, 2^{11001021120220} is an apocalyptic number.

11001021120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001021120220 is an abundant number, since it is smaller than the sum of its proper divisors (12101123232284).

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

11001021120220 is a wasteful number, since it uses less digits than its factorization.

11001021120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550051056020 (or 550051056018 counting only the distinct ones).

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

Adding to 11001021120220 its reverse (2202112010011), we get a palindrome (13203133130231).

The spelling of 11001021120220 in words is "eleven trillion, one billion, twenty-one million, one hundred twenty thousand, two hundred twenty".