12001022112 has 48 divisors (see below), whose sum is σ = 32172964992. Its totient is φ = 3915225600.

The previous prime is 12001022107. The next prime is 12001022119. The reversal of 12001022112 is 21122010021.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12001022119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325389 + ... + 1334412.

It is an arithmetic number, because the mean of its divisors is an integer number (670270104).

Almost surely, 2^12001022112 is an apocalyptic number.

12001022112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001022112 is an abundant number, since it is smaller than the sum of its proper divisors (20171942880).

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

12001022112 is a wasteful number, since it uses less digits than its factorization.

12001022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659861 (or 2659853 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001022112 its reverse (21122010021), we get a palindrome (33123032133).

The spelling of 12001022112 in words is "twelve billion, one million, twenty-two thousand, one hundred twelve".