121435135353 has 24 divisors (see below), whose sum is σ = 200594429568. Its totient is φ = 69346478592.

The previous prime is 121435135343. The next prime is 121435135417. The reversal of 121435135353 is 353531534121.

121435135353 is a `hidden beast` number, since 1 + 2 + 1 + 43 + 513 + 53 + 53 = 666.

It is not a de Polignac number, because 121435135353 - 2⁴ = 121435135337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121435135343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 527400 + ... + 721817.

It is an arithmetic number, because the mean of its divisors is an integer number (8358101232).

Almost surely, 2^121435135353 is an apocalyptic number.

It is an amenable number.

121435135353 is a deficient number, since it is larger than the sum of its proper divisors (79159294215).

121435135353 is a wasteful number, since it uses less digits than its factorization.

121435135353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250773 (or 1250770 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 121435135353 its reverse (353531534121), we get a palindrome (474966669474).

The spelling of 121435135353 in words is "one hundred twenty-one billion, four hundred thirty-five million, one hundred thirty-five thousand, three hundred fifty-three".