12221121032 has 16 divisors (see below), whose sum is σ = 22920437760. Its totient is φ = 6109004304.

The previous prime is 12221121019. The next prime is 12221121037. The reversal of 12221121032 is 23012112221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221121032.

It is not an unprimeable number, because it can be changed into a prime (12221121037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160808 + ... + 224279.

It is an arithmetic number, because the mean of its divisors is an integer number (1432527360).

Almost surely, 2^12221121032 is an apocalyptic number.

It is an amenable number.

12221121032 is a deficient number, since it is larger than the sum of its proper divisors (10699316728).

12221121032 is a wasteful number, since it uses less digits than its factorization.

12221121032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389060 (or 389056 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12221121032 its reverse (23012112221), we get a palindrome (35233233253).

The spelling of 12221121032 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-two".