11210211111220 has 144 divisors (see below), whose sum is σ = 26331889909248. Its totient is φ = 4005258400000.

The previous prime is 11210211111191. The next prime is 11210211111227. The reversal of 11210211111220 is 2211111201211.

It is a junction number, because it is equal to n+sod(n) for n = 11210211111194 and 11210211111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210211111227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31843965 + ... + 32194075.

It is an arithmetic number, because the mean of its divisors is an integer number (182860346592).

Almost surely, 2^{11210211111220} is an apocalyptic number.

11210211111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11210211111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13165944954624).

11210211111220 is an abundant number, since it is smaller than the sum of its proper divisors (15121678798028).

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

11210211111220 is a wasteful number, since it uses less digits than its factorization.

11210211111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350374 (or 350361 counting only the distinct ones).

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

Adding to 11210211111220 its reverse (2211111201211), we get a palindrome (13421322312431).

The spelling of 11210211111220 in words is "eleven trillion, two hundred ten billion, two hundred eleven million, one hundred eleven thousand, two hundred twenty".