202110100221 has 16 divisors (see below), whose sum is σ = 277516569600. Its totient is φ = 130779665328.

The previous prime is 202110100189. The next prime is 202110100261. The reversal of 202110100221 is 122001011202.

It is not a de Polignac number, because 202110100221 - 2⁵ = 202110100189 is a prime.

It is a super-2 number, since 2×202110100221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202110100197 and 202110100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110100261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7213011 + ... + 7240976.

It is an arithmetic number, because the mean of its divisors is an integer number (17344785600).

Almost surely, 2^202110100221 is an apocalyptic number.

It is an amenable number.

202110100221 is a deficient number, since it is larger than the sum of its proper divisors (75406469379).

202110100221 is a wasteful number, since it uses less digits than its factorization.

202110100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14454128.

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

Adding to 202110100221 its reverse (122001011202), we get a palindrome (324111111423).

The spelling of 202110100221 in words is "two hundred two billion, one hundred ten million, one hundred thousand, two hundred twenty-one".