13121203135 has 16 divisors (see below), whose sum is σ = 15937451712. Its totient is φ = 10369728000.

The previous prime is 13121203133. The next prime is 13121203213. The reversal of 13121203135 is 53130212131.

It is not a de Polignac number, because 13121203135 - 2¹ = 13121203133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121203133) 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, 88647 + ... + 184663.

It is an arithmetic number, because the mean of its divisors is an integer number (996090732).

Almost surely, 2^13121203135 is an apocalyptic number.

13121203135 is a deficient number, since it is larger than the sum of its proper divisors (2816248577).

13121203135 is a wasteful number, since it uses less digits than its factorization.

13121203135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96354.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13121203135 its reverse (53130212131), we get a palindrome (66251415266).

The spelling of 13121203135 in words is "thirteen billion, one hundred twenty-one million, two hundred three thousand, one hundred thirty-five".