1100102100221 has 2 divisors, whose sum is σ = 1100102100222. Its totient is φ = 1100102100220.

The previous prime is 1100102100197. The next prime is 1100102100247. The reversal of 1100102100221 is 1220012010011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727012022500 + 373090077721 = 852650^2 + 610811^2 .

It is an emirp because it is prime and its reverse (1220012010011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100102100221 - 2²² = 1100097905917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100102100281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550051050110 + 550051050111.

It is an arithmetic number, because the mean of its divisors is an integer number (550051050111).

Almost surely, 2^{1100102100221} is an apocalyptic number.

It is an amenable number.

1100102100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100102100221 is an equidigital number, since it uses as much as digits as its factorization.

1100102100221 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 1100102100221 its reverse (1220012010011), we get a palindrome (2320114110232).

The spelling of 1100102100221 in words is "one trillion, one hundred billion, one hundred two million, one hundred thousand, two hundred twenty-one".