32012223012 has 144 divisors (see below), whose sum is σ = 100964957184. Its totient is φ = 8308440000.

The previous prime is 32012222999. The next prime is 32012223013. The reversal of 32012223012 is 21032221023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (32012223013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4351137 + ... + 4358487.

It is an arithmetic number, because the mean of its divisors is an integer number (701145536).

Almost surely, 2^32012223012 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 32012223012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50482478592).

32012223012 is an abundant number, since it is smaller than the sum of its proper divisors (68952734172).

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

32012223012 is a wasteful number, since it uses less digits than its factorization.

32012223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8950 (or 8945 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 32012223012 its reverse (21032221023), we get a palindrome (53044444035).

The spelling of 32012223012 in words is "thirty-two billion, twelve million, two hundred twenty-three thousand, twelve".