12212331232 has 48 divisors (see below), whose sum is σ = 24605359632. Its totient is φ = 5964375040.

The previous prime is 12212331227. The next prime is 12212331233. The reversal of 12212331232 is 23213321221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212331233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369132 + ... + 400852.

It is an arithmetic number, because the mean of its divisors is an integer number (512611659).

Almost surely, 2^12212331232 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 12212331232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12302679816).

12212331232 is an abundant number, since it is smaller than the sum of its proper divisors (12393028400).

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

12212331232 is a wasteful number, since it uses less digits than its factorization.

12212331232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32011 (or 32003 counting only the distinct ones).

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

Adding to 12212331232 its reverse (23213321221), we get a palindrome (35425652453).

The spelling of 12212331232 in words is "twelve billion, two hundred twelve million, three hundred thirty-one thousand, two hundred thirty-two".