100020010110221 has 2 divisors, whose sum is σ = 100020010110222. Its totient is φ = 100020010110220.

The previous prime is 100020010110203. The next prime is 100020010110247. The reversal of 100020010110221 is 122011010020001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92022771122500 + 7997238987721 = 9592850^2 + 2827939^2 .

It is a cyclic number.

It is not a de Polignac number, because 100020010110221 - 2²² = 100020005915917 is a prime.

It is a super-2 number, since 2×100020010110221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100020010110421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010005055110 + 50010005055111.

It is an arithmetic number, because the mean of its divisors is an integer number (50010005055111).

Almost surely, 2^{100020010110221} is an apocalyptic number.

It is an amenable number.

100020010110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100020010110221 is an equidigital number, since it uses as much as digits as its factorization.

100020010110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100020010110221 its reverse (122011010020001), we get a palindrome (222031020130222).

The spelling of 100020010110221 in words is "one hundred trillion, twenty billion, ten million, one hundred ten thousand, two hundred twenty-one".