13211233212 has 48 divisors (see below), whose sum is σ = 32175908352. Its totient is φ = 4211042880.

The previous prime is 13211233207. The next prime is 13211233223. The reversal of 13211233212 is 21233211231.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 1613553 + ... + 1621719.

It is an arithmetic number, because the mean of its divisors is an integer number (670331424).

Almost surely, 2^13211233212 is an apocalyptic number.

13211233212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13211233212 is an abundant number, since it is smaller than the sum of its proper divisors (18964675140).

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

13211233212 is a wasteful number, since it uses less digits than its factorization.

13211233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14058 (or 14056 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 13211233212 its reverse (21233211231), we get a palindrome (34444444443).

The spelling of 13211233212 in words is "thirteen billion, two hundred eleven million, two hundred thirty-three thousand, two hundred twelve".