12212133232 has 80 divisors (see below), whose sum is σ = 25748664480. Its totient is φ = 5577523200.

The previous prime is 12212133229. The next prime is 12212133239. The reversal of 12212133232 is 23233121221.

It is a super-3 number, since 3×12212133232³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212133239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8972232 + ... + 8973592.

It is an arithmetic number, because the mean of its divisors is an integer number (321858306).

Almost surely, 2^12212133232 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 12212133232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12874332240).

12212133232 is an abundant number, since it is smaller than the sum of its proper divisors (13536531248).

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

12212133232 is a wasteful number, since it uses less digits than its factorization.

12212133232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1796 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 12212133232 its reverse (23233121221), we get a palindrome (35445254453).

The spelling of 12212133232 in words is "twelve billion, two hundred twelve million, one hundred thirty-three thousand, two hundred thirty-two".