13112211212 has 12 divisors (see below), whose sum is σ = 23335291560. Its totient is φ = 6444985056.

The previous prime is 13112211193. The next prime is 13112211223. The reversal of 13112211212 is 21211221131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27779873 + ... + 27780344.

It is an arithmetic number, because the mean of its divisors is an integer number (1944607630).

Almost surely, 2^13112211212 is an apocalyptic number.

It is an amenable number.

13112211212 is a deficient number, since it is larger than the sum of its proper divisors (10223080348).

13112211212 is a wasteful number, since it uses less digits than its factorization.

13112211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55560280 (or 55560278 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

Adding to 13112211212 its reverse (21211221131), we get a palindrome (34323432343).

The spelling of 13112211212 in words is "thirteen billion, one hundred twelve million, two hundred eleven thousand, two hundred twelve".