13203131221212 has 24 divisors (see below), whose sum is σ = 31523755165056. Its totient is φ = 4298693885808.

The previous prime is 13203131221211. The next prime is 13203131221243. The reversal of 13203131221212 is 21212213130231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203131221211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12793731288 + ... + 12793732319.

It is an arithmetic number, because the mean of its divisors is an integer number (1313489798544).

Almost surely, 2^{13203131221212} is an apocalyptic number.

13203131221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13203131221212 is an abundant number, since it is smaller than the sum of its proper divisors (18320623943844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13203131221212 is a wasteful number, since it uses less digits than its factorization.

13203131221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25587463657 (or 25587463655 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13203131221212 its reverse (21212213130231), we get a palindrome (34415344351443).

The spelling of 13203131221212 in words is "thirteen trillion, two hundred three billion, one hundred thirty-one million, two hundred twenty-one thousand, two hundred twelve".