135552200121 has 48 divisors (see below), whose sum is σ = 216179419456. Its totient is φ = 81319448448.

The previous prime is 135552200111. The next prime is 135552200141. The reversal of 135552200121 is 121002255531.

135552200121 is a `hidden beast` number, since 13 + 5 + 5 + 522 + 0 + 0 + 121 = 666.

It is not a de Polignac number, because 135552200121 - 2⁶ = 135552200057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135552200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2605455 + ... + 2656971.

Almost surely, 2^135552200121 is an apocalyptic number.

It is an amenable number.

135552200121 is a deficient number, since it is larger than the sum of its proper divisors (80627219335).

135552200121 is a wasteful number, since it uses less digits than its factorization.

135552200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52102 (or 52099 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 135552200121 its reverse (121002255531), we get a palindrome (256554455652).

The spelling of 135552200121 in words is "one hundred thirty-five billion, five hundred fifty-two million, two hundred thousand, one hundred twenty-one".