201120550505 has 16 divisors (see below), whose sum is σ = 280344152064. Its totient is φ = 135650393280.

The previous prime is 201120550481. The next prime is 201120550537. The reversal of 201120550505 is 505055021102.

It is not a de Polignac number, because 201120550505 - 2⁸ = 201120550249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47098697 + ... + 47102966.

It is an arithmetic number, because the mean of its divisors is an integer number (17521509504).

Almost surely, 2^201120550505 is an apocalyptic number.

It is an amenable number.

201120550505 is a deficient number, since it is larger than the sum of its proper divisors (79223601559).

201120550505 is an equidigital number, since it uses as much as digits as its factorization.

201120550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94201736.

The product of its (nonzero) digits is 2500, while the sum is 26.

Adding to 201120550505 its reverse (505055021102), we get a palindrome (706175571607).

The spelling of 201120550505 in words is "two hundred one billion, one hundred twenty million, five hundred fifty thousand, five hundred five".