210445242205 has 8 divisors (see below), whose sum is σ = 275491953504. Its totient is φ = 153051085200.

The previous prime is 210445242199. The next prime is 210445242221. The reversal of 210445242205 is 502242544012.

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

It is a de Polignac number, because none of the positive numbers 2^k-210445242205 is a prime.

It is a super-2 number, since 2×210445242205² (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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1913138511 + ... + 1913138620.

It is an arithmetic number, because the mean of its divisors is an integer number (34436494188).

Almost surely, 2^210445242205 is an apocalyptic number.

It is an amenable number.

210445242205 is a deficient number, since it is larger than the sum of its proper divisors (65046711299).

210445242205 is a wasteful number, since it uses less digits than its factorization.

210445242205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826277147.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 210445242205 its reverse (502242544012), we get a palindrome (712687786217).

The spelling of 210445242205 in words is "two hundred ten billion, four hundred forty-five million, two hundred forty-two thousand, two hundred five".