210100102000221 has 4 divisors (see below), whose sum is σ = 280133469333632. Its totient is φ = 140066734666812.

The previous prime is 210100102000211. The next prime is 210100102000273. The reversal of 210100102000221 is 122000201001012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 210100102000221 - 2⁵ = 210100102000189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100102000197 and 210100102000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100102000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35016683666701 + ... + 35016683666706.

It is an arithmetic number, because the mean of its divisors is an integer number (70033367333408).

Almost surely, 2^{210100102000221} is an apocalyptic number.

It is an amenable number.

210100102000221 is a deficient number, since it is larger than the sum of its proper divisors (70033367333411).

210100102000221 is an equidigital number, since it uses as much as digits as its factorization.

210100102000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70033367333410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210100102000221 its reverse (122000201001012), we get a palindrome (332100303001233).

The spelling of 210100102000221 in words is "two hundred ten trillion, one hundred billion, one hundred two million, two hundred twenty-one", and thus it is an aban number.