100100000220221 has 2 divisors, whose sum is σ = 100100000220222. Its totient is φ = 100100000220220.

The previous prime is 100100000220197. The next prime is 100100000220247. The reversal of 100100000220221 is 122022000001001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95510336697721 + 4589663522500 = 9772939^2 + 2142350^2 .

It is a cyclic number.

It is not a de Polignac number, because 100100000220221 - 2²² = 100099996025917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100100000220251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050000110110 + 50050000110111.

It is an arithmetic number, because the mean of its divisors is an integer number (50050000110111).

Almost surely, 2^{100100000220221} is an apocalyptic number.

It is an amenable number.

100100000220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100100000220221 is an equidigital number, since it uses as much as digits as its factorization.

100100000220221 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 11.

Adding to 100100000220221 its reverse (122022000001001), we get a palindrome (222122000221222).

The spelling of 100100000220221 in words is "one hundred trillion, one hundred billion, two hundred twenty thousand, two hundred twenty-one".