12221031032 has 128 divisors (see below), whose sum is σ = 27913036800. Its totient is φ = 4906718208.

The previous prime is 12221031013. The next prime is 12221031037. The reversal of 12221031032 is 23013012221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221031032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221031037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6503069 + ... + 6504947.

It is an arithmetic number, because the mean of its divisors is an integer number (218070600).

Almost surely, 2^12221031032 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 12221031032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13956518400).

12221031032 is an abundant number, since it is smaller than the sum of its proper divisors (15692005768).

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

12221031032 is a wasteful number, since it uses less digits than its factorization.

12221031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12221031032 its reverse (23013012221), we get a palindrome (35234043253).

The spelling of 12221031032 in words is "twelve billion, two hundred twenty-one million, thirty-one thousand, thirty-two".