13121213203 has 16 divisors (see below), whose sum is σ = 15450301440. Its totient is φ = 10910019456.

The previous prime is 13121213191. The next prime is 13121213219. The reversal of 13121213203 is 30231212131.

It is not a de Polignac number, because 13121213203 - 2⁹ = 13121212691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13121213293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139293 + ... + 213646.

It is an arithmetic number, because the mean of its divisors is an integer number (965643840).

Almost surely, 2^13121213203 is an apocalyptic number.

13121213203 is a deficient number, since it is larger than the sum of its proper divisors (2329088237).

13121213203 is a wasteful number, since it uses less digits than its factorization.

13121213203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353106.

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

Adding to 13121213203 its reverse (30231212131), we get a palindrome (43352425334).

The spelling of 13121213203 in words is "thirteen billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred three".