10102000100221 has 4 divisors (see below), whose sum is σ = 10696235400252. Its totient is φ = 9507764800192.

The previous prime is 10102000100191. The next prime is 10102000100237. The reversal of 10102000100221 is 12200100020101.

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 8374576180996 + 1727423919225 = 2893886^2 + 1314315^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102000100221 - 2³¹ = 10099852616573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102000100198 and 10102000100207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102000100261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297117649990 + ... + 297117650023.

It is an arithmetic number, because the mean of its divisors is an integer number (2674058850063).

Almost surely, 2^{10102000100221} is an apocalyptic number.

It is an amenable number.

10102000100221 is a deficient number, since it is larger than the sum of its proper divisors (594235300031).

10102000100221 is an equidigital number, since it uses as much as digits as its factorization.

10102000100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594235300030.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10102000100221 its reverse (12200100020101), we get a palindrome (22302100120322).

The spelling of 10102000100221 in words is "ten trillion, one hundred two billion, one hundred thousand, two hundred twenty-one".