13221332212 has 24 divisors (see below), whose sum is σ = 25244265312. Its totient is φ = 6008853600.

The previous prime is 13221332207. The next prime is 13221332231. The reversal of 13221332212 is 21223312231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383478 + ... + 416530.

It is an arithmetic number, because the mean of its divisors is an integer number (1051844388).

Almost surely, 2^13221332212 is an apocalyptic number.

It is an amenable number.

13221332212 is a deficient number, since it is larger than the sum of its proper divisors (12022933100).

13221332212 is a wasteful number, since it uses less digits than its factorization.

13221332212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42159 (or 42157 counting only the distinct ones).

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

Adding to 13221332212 its reverse (21223312231), we get a palindrome (34444644443).

The spelling of 13221332212 in words is "thirteen billion, two hundred twenty-one million, three hundred thirty-two thousand, two hundred twelve".