11220000021220 has 24 divisors (see below), whose sum is σ = 23747527609344. Its totient is φ = 4452661424736.

The previous prime is 11220000021211. The next prime is 11220000021299. The reversal of 11220000021220 is 2212000002211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11220000021220.

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, 2208658882 + ... + 2208663961.

It is an arithmetic number, because the mean of its divisors is an integer number (989480317056).

Almost surely, 2^{11220000021220} is an apocalyptic number.

11220000021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220000021220 is an abundant number, since it is smaller than the sum of its proper divisors (12527527588124).

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

11220000021220 is a wasteful number, since it uses less digits than its factorization.

11220000021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4417322979 (or 4417322977 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11220000021220 its reverse (2212000002211), we get a palindrome (13432000023431).

The spelling of 11220000021220 in words is "eleven trillion, two hundred twenty billion, twenty-one thousand, two hundred twenty".