13021320231212 has 12 divisors (see below), whose sum is σ = 23986642531320. Its totient is φ = 6167993793696.

The previous prime is 13021320231209. The next prime is 13021320231341. The reversal of 13021320231212 is 21213202312031.

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, 85666580393 + ... + 85666580544.

It is an arithmetic number, because the mean of its divisors is an integer number (1998886877610).

Almost surely, 2^{13021320231212} is an apocalyptic number.

It is an amenable number.

13021320231212 is a deficient number, since it is larger than the sum of its proper divisors (10965322300108).

13021320231212 is a wasteful number, since it uses less digits than its factorization.

13021320231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171333160960 (or 171333160958 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13021320231212 its reverse (21213202312031), we get a palindrome (34234522543243).

The spelling of 13021320231212 in words is "thirteen trillion, twenty-one billion, three hundred twenty million, two hundred thirty-one thousand, two hundred twelve".