11211010220 has 24 divisors (see below), whose sum is σ = 23545261824. Its totient is φ = 4483996416.

The previous prime is 11211010169. The next prime is 11211010231. The reversal of 11211010220 is 2201011211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303812 + ... + 338708.

It is an arithmetic number, because the mean of its divisors is an integer number (981052576).

Almost surely, 2^11211010220 is an apocalyptic number.

11211010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211010220 is an abundant number, since it is smaller than the sum of its proper divisors (12334251604).

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

11211010220 is a wasteful number, since it uses less digits than its factorization.

11211010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50969 (or 50967 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11211010220 its reverse (2201011211), we get a palindrome (13412021431).

Subtracting from 11211010220 its reverse (2201011211), we obtain a palindrome (9009999009).

The spelling of 11211010220 in words is "eleven billion, two hundred eleven million, ten thousand, two hundred twenty".