201192001085 has 4 divisors (see below), whose sum is σ = 241430401308. Its totient is φ = 160953600864.

The previous prime is 201192001069. The next prime is 201192001093. The reversal of 201192001085 is 580100291102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145183098841 + 56008902244 = 381029^2 + 236662^2 .

It is a cyclic number.

It is not a de Polignac number, because 201192001085 - 2⁴ = 201192001069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20119200104 + ... + 20119200113.

It is an arithmetic number, because the mean of its divisors is an integer number (60357600327).

Almost surely, 2^201192001085 is an apocalyptic number.

It is an amenable number.

201192001085 is a deficient number, since it is larger than the sum of its proper divisors (40238400223).

201192001085 is an equidigital number, since it uses as much as digits as its factorization.

201192001085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40238400222.

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 201192001085 its reverse (580100291102), we get a palindrome (781292292187).

The spelling of 201192001085 in words is "two hundred one billion, one hundred ninety-two million, one thousand, eighty-five".