201055135321 has 4 divisors (see below), whose sum is σ = 201080391952. Its totient is φ = 201029878692.

The previous prime is 201055135319. The next prime is 201055135331. The reversal of 201055135321 is 123531550102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201055135321 - 2¹ = 201055135319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201055135321.

It is not an unprimeable number, because it can be changed into a prime (201055135301) 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 3 ways as a sum of consecutive naturals, for example, 12616371 + ... + 12632296.

It is an arithmetic number, because the mean of its divisors is an integer number (50270097988).

Almost surely, 2^201055135321 is an apocalyptic number.

It is an amenable number.

201055135321 is a deficient number, since it is larger than the sum of its proper divisors (25256631).

201055135321 is an equidigital number, since it uses as much as digits as its factorization.

201055135321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25256630.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 201055135321 its reverse (123531550102), we get a palindrome (324586685423).

The spelling of 201055135321 in words is "two hundred one billion, fifty-five million, one hundred thirty-five thousand, three hundred twenty-one".