13103121212 has 24 divisors (see below), whose sum is σ = 24284158416. Its totient is φ = 6164944128.

The previous prime is 13103121197. The next prime is 13103121217. The reversal of 13103121212 is 21212130131.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103121217) 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, 386498 + ... + 419030.

It is an arithmetic number, because the mean of its divisors is an integer number (1011839934).

Almost surely, 2^13103121212 is an apocalyptic number.

It is an amenable number.

13103121212 is a deficient number, since it is larger than the sum of its proper divisors (11181037204).

13103121212 is a wasteful number, since it uses less digits than its factorization.

13103121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38477 (or 38475 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13103121212 its reverse (21212130131), we get a palindrome (34315251343).

The spelling of 13103121212 in words is "thirteen billion, one hundred three million, one hundred twenty-one thousand, two hundred twelve".