12020122312 has 64 divisors (see below), whose sum is σ = 24889991040. Its totient is φ = 5396544000.

The previous prime is 12020122297. The next prime is 12020122363. The reversal of 12020122312 is 21322102021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4327068 + ... + 4329844.

It is an arithmetic number, because the mean of its divisors is an integer number (388906110).

Almost surely, 2^12020122312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020122312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12444995520).

12020122312 is an abundant number, since it is smaller than the sum of its proper divisors (12869868728).

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

12020122312 is a wasteful number, since it uses less digits than its factorization.

12020122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382 (or 3378 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12020122312 its reverse (21322102021), we get a palindrome (33342224333).

The spelling of 12020122312 in words is "twelve billion, twenty million, one hundred twenty-two thousand, three hundred twelve".