11020221111220 has 36 divisors (see below), whose sum is σ = 24583863509100. Its totient is φ = 4148789122048.

The previous prime is 11020221111187. The next prime is 11020221111269. The reversal of 11020221111220 is 2211112202011.

11020221111220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 28357212816 + 10991863898404 = 168396^2 + 3315398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11020221111194 and 11020221111203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 953300545 + ... + 953312104.

It is an arithmetic number, because the mean of its divisors is an integer number (682885097475).

Almost surely, 2^{11020221111220} is an apocalyptic number.

11020221111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020221111220 is an abundant number, since it is smaller than the sum of its proper divisors (13563642397880).

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

11020221111220 is a wasteful number, since it uses less digits than its factorization.

11020221111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906612692 (or 1906612673 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11020221111220 its reverse (2211112202011), we get a palindrome (13231333313231).

The spelling of 11020221111220 in words is "eleven trillion, twenty billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty".