4135131203121 has 16 divisors (see below), whose sum is σ = 6212403688320. Its totient is φ = 2717926611120.

The previous prime is 4135131203113. The next prime is 4135131203141. The reversal of 4135131203121 is 1213021315314.

4135131203121 is a `hidden beast` number, since 4 + 1 + 3 + 513 + 1 + 20 + 3 + 121 = 666.

It is not a de Polignac number, because 4135131203121 - 2³ = 4135131203113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4135131203101) 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, 1078540390 + ... + 1078544223.

It is an arithmetic number, because the mean of its divisors is an integer number (388275230520).

Almost surely, 2^{4135131203121} is an apocalyptic number.

It is an amenable number.

4135131203121 is a deficient number, since it is larger than the sum of its proper divisors (2077272485199).

4135131203121 is a wasteful number, since it uses less digits than its factorization.

4135131203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157084693 (or 2157084687 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 4135131203121 its reverse (1213021315314), we get a palindrome (5348152518435).

The spelling of 4135131203121 in words is "four trillion, one hundred thirty-five billion, one hundred thirty-one million, two hundred three thousand, one hundred twenty-one".