201021210210005 has 8 divisors (see below), whose sum is σ = 241254456203832. Its totient is φ = 160797632200128.

The previous prime is 201021210210001. The next prime is 201021210210017. The reversal of 201021210210005 is 500012012120102.

It can be written as a sum of positive squares in 4 ways, for example, as 93646477306321 + 107374732903684 = 9677111^2 + 10362178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201021210210005 - 2² = 201021210210001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021210210001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2416950242 + ... + 2417033411.

It is an arithmetic number, because the mean of its divisors is an integer number (30156807025479).

Almost surely, 2^{201021210210005} is an apocalyptic number.

It is an amenable number.

201021210210005 is a deficient number, since it is larger than the sum of its proper divisors (40233245993827).

201021210210005 is an equidigital number, since it uses as much as digits as its factorization.

201021210210005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833991975.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 201021210210005 its reverse (500012012120102), we get a palindrome (701033222330107).

The spelling of 201021210210005 in words is "two hundred one trillion, twenty-one billion, two hundred ten million, two hundred ten thousand, five".