100221101 has 2 divisors, whose sum is σ = 100221102. Its totient is φ = 100221100.

The previous prime is 100221083. The next prime is 100221131. The reversal of 100221101 is 101122001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64818601 + 35402500 = 8051^2 + 5950^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221101 - 2¹⁰ = 100220077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110550 + 50110551.

It is an arithmetic number, because the mean of its divisors is an integer number (50110551).

Almost surely, 2^100221101 is an apocalyptic number.

It is an amenable number.

100221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221101 is an equidigital number, since it uses as much as digits as its factorization.

100221101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 100221101 is about 10011.0489460396. The cubic root of 100221101 is about 464.5007181957.

Adding to 100221101 its reverse (101122001), we get a palindrome (201343102).

The spelling of 100221101 in words is "one hundred million, two hundred twenty-one thousand, one hundred one".