12220001111220 has 288 divisors, whose sum is σ = 41552149782528. Its totient is φ = 2670458934528.

The previous prime is 12220001111189. The next prime is 12220001111249. The reversal of 12220001111220 is 2211110002221.

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 12220001111220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 149196399 + ... + 149278281.

It is an arithmetic number, because the mean of its divisors is an integer number (144278297856).

Almost surely, 2^{12220001111220} is an apocalyptic number.

12220001111220 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 12220001111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20776074891264).

12220001111220 is an abundant number, since it is smaller than the sum of its proper divisors (29332148671308).

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

12220001111220 is a wasteful number, since it uses less digits than its factorization.

12220001111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84139 (or 84130 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12220001111220 its reverse (2211110002221), we get a palindrome (14431111113441).

The spelling of 12220001111220 in words is "twelve trillion, two hundred twenty billion, one million, one hundred eleven thousand, two hundred twenty".