101001220110221 has 2 divisors, whose sum is σ = 101001220110222. Its totient is φ = 101001220110220.

The previous prime is 101001220110211. The next prime is 101001220110233. The reversal of 101001220110221 is 122011022100101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52898187256996 + 48103032853225 = 7273114^2 + 6935635^2 .

It is an emirp because it is prime and its reverse (122011022100101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101001220110221 - 2³⁰ = 101000146368397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101001220110196 and 101001220110205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101001220110211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500610055110 + 50500610055111.

It is an arithmetic number, because the mean of its divisors is an integer number (50500610055111).

Almost surely, 2^{101001220110221} is an apocalyptic number.

It is an amenable number.

101001220110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101001220110221 is an equidigital number, since it uses as much as digits as its factorization.

101001220110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101001220110221 its reverse (122011022100101), we get a palindrome (223012242210322).

The spelling of 101001220110221 in words is "one hundred one trillion, one billion, two hundred twenty million, one hundred ten thousand, two hundred twenty-one".