13212231112 has 32 divisors (see below), whose sum is σ = 24934029120. Its totient is φ = 6563229120.

The previous prime is 13212231103. The next prime is 13212231119. The reversal of 13212231112 is 21113221231.

It is a self number, because there is not a number n which added to its sum of digits gives 13212231112.

It is not an unprimeable number, because it can be changed into a prime (13212231119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1714933 + ... + 1722619.

It is an arithmetic number, because the mean of its divisors is an integer number (779188410).

Almost surely, 2^13212231112 is an apocalyptic number.

It is an amenable number.

13212231112 is a deficient number, since it is larger than the sum of its proper divisors (11721798008).

13212231112 is a wasteful number, since it uses less digits than its factorization.

13212231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061 (or 9057 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 13212231112 its reverse (21113221231), we get a palindrome (34325452343).

The spelling of 13212231112 in words is "thirteen billion, two hundred twelve million, two hundred thirty-one thousand, one hundred twelve".