12013313212 has 24 divisors (see below), whose sum is σ = 21100262400. Its totient is φ = 5984697456.

The previous prime is 12013313209. The next prime is 12013313237. The reversal of 12013313212 is 21231331021.

It is a super-2 number, since 2×12013313212² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12013313212.

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, 2040489 + ... + 2046367.

It is an arithmetic number, because the mean of its divisors is an integer number (879177600).

Almost surely, 2^12013313212 is an apocalyptic number.

It is an amenable number.

12013313212 is a deficient number, since it is larger than the sum of its proper divisors (9086949188).

12013313212 is a wasteful number, since it uses less digits than its factorization.

12013313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665 (or 7663 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12013313212 its reverse (21231331021), we get a palindrome (33244644233).

The spelling of 12013313212 in words is "twelve billion, thirteen million, three hundred thirteen thousand, two hundred twelve".