11201211220220 has 48 divisors (see below), whose sum is σ = 28464254400960. Its totient is φ = 3614508493824.

The previous prime is 11201211220219. The next prime is 11201211220313. The reversal of 11201211220220 is 2202211210211.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2353193255 + ... + 2353198014.

It is an arithmetic number, because the mean of its divisors is an integer number (593005300020).

Almost surely, 2^{11201211220220} is an apocalyptic number.

11201211220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201211220220 is an abundant number, since it is smaller than the sum of its proper divisors (17263043180740).

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

11201211220220 is a wasteful number, since it uses less digits than its factorization.

11201211220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4706391302 (or 4706391300 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11201211220220 its reverse (2202211210211), we get a palindrome (13403422430431).

The spelling of 11201211220220 in words is "eleven trillion, two hundred one billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty".