12002222020 has 144 divisors (see below), whose sum is σ = 28185252480. Its totient is φ = 4283969536.

The previous prime is 12002222009. The next prime is 12002222027. The reversal of 12002222020 is 2022220021.

It is not an unprimeable number, because it can be changed into a prime (12002222027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18212451 + ... + 18213109.

It is an arithmetic number, because the mean of its divisors is an integer number (195730920).

Almost surely, 2^12002222020 is an apocalyptic number.

12002222020 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 12002222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14092626240).

12002222020 is an abundant number, since it is smaller than the sum of its proper divisors (16183030460).

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

12002222020 is a wasteful number, since it uses less digits than its factorization.

12002222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 12002222020 its reverse (2022220021), we get a palindrome (14024442041).

The spelling of 12002222020 in words is "twelve billion, two million, two hundred twenty-two thousand, twenty".