13212001222 has 32 divisors (see below), whose sum is σ = 23121907200. Its totient is φ = 5659705800.

The previous prime is 13212001219. The next prime is 13212001237. The reversal of 13212001222 is 22210021231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13212001196 and 13212001205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2966097 + ... + 2970547.

It is an arithmetic number, because the mean of its divisors is an integer number (722559600).

Almost surely, 2^13212001222 is an apocalyptic number.

13212001222 is a deficient number, since it is larger than the sum of its proper divisors (9909905978).

13212001222 is an equidigital number, since it uses as much as digits as its factorization.

13212001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8801 (or 8787 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13212001222 its reverse (22210021231), we get a palindrome (35422022453).

The spelling of 13212001222 in words is "thirteen billion, two hundred twelve million, one thousand, two hundred twenty-two".