12220001002120 has 128 divisors (see below), whose sum is σ = 30660715900800. Its totient is φ = 4356046688256.

The previous prime is 12220001002093. The next prime is 12220001002123. The reversal of 12220001002120 is 2120010002221.

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 12220001002120.

It is not an unprimeable number, because it can be changed into a prime (12220001002123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24390454 + ... + 24886426.

It is an arithmetic number, because the mean of its divisors is an integer number (239536842975).

Almost surely, 2^{12220001002120} is an apocalyptic number.

12220001002120 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 12220001002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15330357950400).

12220001002120 is an abundant number, since it is smaller than the sum of its proper divisors (18440714898680).

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

12220001002120 is a wasteful number, since it uses less digits than its factorization.

12220001002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497927 (or 497923 counting only the distinct ones).

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

Adding to 12220001002120 its reverse (2120010002221), we get a palindrome (14340011004341).

The spelling of 12220001002120 in words is "twelve trillion, two hundred twenty billion, one million, two thousand, one hundred twenty".