201052121005 has 4 divisors (see below), whose sum is σ = 241262545212. Its totient is φ = 160841696800.

The previous prime is 201052120991. The next prime is 201052121099. The reversal of 201052121005 is 500121250102.

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 137478549961 + 63573571044 = 370781^2 + 252138^2 .

It is not a de Polignac number, because 201052121005 - 2¹³ = 201052112813 is a prime.

It is a Duffinian 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, 20105212096 + ... + 20105212105.

It is an arithmetic number, because the mean of its divisors is an integer number (60315636303).

Almost surely, 2^201052121005 is an apocalyptic number.

It is an amenable number.

201052121005 is a deficient number, since it is larger than the sum of its proper divisors (40210424207).

201052121005 is an equidigital number, since it uses as much as digits as its factorization.

201052121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40210424206.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 201052121005 its reverse (500121250102), we get a palindrome (701173371107).

The spelling of 201052121005 in words is "two hundred one billion, fifty-two million, one hundred twenty-one thousand, five".