12212173232 has 80 divisors (see below), whose sum is σ = 28668260352. Its totient is φ = 4928014080.

The previous prime is 12212173229. The next prime is 12212173241. The reversal of 12212173232 is 23237121221.

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, 80933 + ... + 175995.

Almost surely, 2^12212173232 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 12212173232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14334130176).

12212173232 is an abundant number, since it is smaller than the sum of its proper divisors (16456087120).

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

12212173232 is a wasteful number, since it uses less digits than its factorization.

12212173232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95146 (or 95140 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

Adding to 12212173232 its reverse (23237121221), we get a palindrome (35449294453).

The spelling of 12212173232 in words is "twelve billion, two hundred twelve million, one hundred seventy-three thousand, two hundred thirty-two".