202102212005 has 8 divisors (see below), whose sum is σ = 242527594392. Its totient is φ = 161678476288.

The previous prime is 202102211989. The next prime is 202102212017. The reversal of 202102212005 is 500212201202.

202102212005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38329025284 + 163773186721 = 195778^2 + 404689^2 .

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 202102212005 - 2⁴ = 202102211989 is a prime.

It is a super-2 number, since 2×202102212005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 123284 + ... + 647613.

It is an arithmetic number, because the mean of its divisors is an integer number (30315949299).

Almost surely, 2^202102212005 is an apocalyptic number.

It is an amenable number.

202102212005 is a deficient number, since it is larger than the sum of its proper divisors (40425382387).

202102212005 is an equidigital number, since it uses as much as digits as its factorization.

202102212005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823335.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 202102212005 its reverse (500212201202), we get a palindrome (702314413207).

The spelling of 202102212005 in words is "two hundred two billion, one hundred two million, two hundred twelve thousand, five".