12220012211020 has 96 divisors (see below), whose sum is σ = 26845937911296. Its totient is φ = 4663593792000.

The previous prime is 12220012211009. The next prime is 12220012211111. The reversal of 12220012211020 is 2011221002221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12220012210985 and 12220012211003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323715787 + ... + 323753533.

It is an arithmetic number, because the mean of its divisors is an integer number (279645186576).

Almost surely, 2^{12220012211020} is an apocalyptic number.

12220012211020 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 12220012211020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13422968955648).

12220012211020 is an abundant number, since it is smaller than the sum of its proper divisors (14625925700276).

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

12220012211020 is a wasteful number, since it uses less digits than its factorization.

12220012211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39551 (or 39549 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12220012211020 its reverse (2011221002221), we get a palindrome (14231233213241).

The spelling of 12220012211020 in words is "twelve trillion, two hundred twenty billion, twelve million, two hundred eleven thousand, twenty".