11212013220 has 24 divisors (see below), whose sum is σ = 31393637184. Its totient is φ = 2989870176.

The previous prime is 11212013201. The next prime is 11212013237. The reversal of 11212013220 is 2231021211.

11212013220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11212013220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93433384 + ... + 93433503.

It is an arithmetic number, because the mean of its divisors is an integer number (1308068216).

Almost surely, 2^11212013220 is an apocalyptic number.

11212013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212013220 is an abundant number, since it is smaller than the sum of its proper divisors (20181623964).

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

11212013220 is a wasteful number, since it uses less digits than its factorization.

11212013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186866899 (or 186866897 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11212013220 its reverse (2231021211), we get a palindrome (13443034431).

The spelling of 11212013220 in words is "eleven billion, two hundred twelve million, thirteen thousand, two hundred twenty".