12012021102220 has 48 divisors (see below), whose sum is σ = 25465533414048. Its totient is φ = 4759055101440.

The previous prime is 12012021102181. The next prime is 12012021102227. The reversal of 12012021102220 is 2220112021021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12012021102194 and 12012021102203.

It is not an unprimeable number, because it can be changed into a prime (12012021102227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11574214 + ... + 12569266.

It is an arithmetic number, because the mean of its divisors is an integer number (530531946126).

Almost surely, 2^{12012021102220} is an apocalyptic number.

12012021102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012021102220 is an abundant number, since it is smaller than the sum of its proper divisors (13453512311828).

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

12012021102220 is a wasteful number, since it uses less digits than its factorization.

12012021102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000810 (or 1000808 counting only the distinct ones).

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

Adding to 12012021102220 its reverse (2220112021021), we get a palindrome (14232133123241).

The spelling of 12012021102220 in words is "twelve trillion, twelve billion, twenty-one million, one hundred two thousand, two hundred twenty".