12020000022 has 80 divisors (see below), whose sum is σ = 27278143200. Its totient is φ = 3955640832.

The previous prime is 12020000017. The next prime is 12020000023. The reversal of 12020000022 is 22000002021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12019999959 and 12020000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020000023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9412048 + ... + 9413324.

It is an arithmetic number, because the mean of its divisors is an integer number (340976790).

Almost surely, 2^12020000022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020000022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13639071600).

12020000022 is an abundant number, since it is smaller than the sum of its proper divisors (15258143178).

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

12020000022 is a wasteful number, since it uses less digits than its factorization.

12020000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 12020000022 its reverse (22000002021), we get a palindrome (34020002043).

The spelling of 12020000022 in words is "twelve billion, twenty million, twenty-two", and thus it is an aban number and an uban number.