201018619201 has 3 divisors (see below), whose sum is σ = 201019067553. Its totient is φ = 201018170850.

The previous prime is 201018619183. The next prime is 201018619223. The reversal of 201018619201 is 102916810102.

It is a happy number.

The square root of 201018619201 is 448351.

It is a perfect power (a square), and thus also a powerful number.

201018619201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 201018619201 - 2¹¹ = 201018617153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201018617201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 224176 + ... + 672526.

It is an arithmetic number, because the mean of its divisors is an integer number (67006355851).

Almost surely, 2^201018619201 is an apocalyptic number.

201018619201 is the 448351-st square number.

201018619201 is the 224176-th centered octagonal number.

It is an amenable number.

201018619201 is a deficient number, since it is larger than the sum of its proper divisors (448352).

201018619201 is an frugal number, since it uses more digits than its factorization.

201018619201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896702 (or 448351 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 201018619201 in words is "two hundred one billion, eighteen million, six hundred nineteen thousand, two hundred one".