1001102010221 has 2 divisors, whose sum is σ = 1001102010222. Its totient is φ = 1001102010220.

The previous prime is 1001102010193. The next prime is 1001102010229. The reversal of 1001102010221 is 1220102011001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980080200100 + 21021810121 = 989990^2 + 144989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001102010221 - 2¹⁰ = 1001102009197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001102010229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500551005110 + 500551005111.

It is an arithmetic number, because the mean of its divisors is an integer number (500551005111).

Almost surely, 2^{1001102010221} is an apocalyptic number.

It is an amenable number.

1001102010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001102010221 is an equidigital number, since it uses as much as digits as its factorization.

1001102010221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1001102010221 its reverse (1220102011001), we get a palindrome (2221204021222).

The spelling of 1001102010221 in words is "one trillion, one billion, one hundred two million, ten thousand, two hundred twenty-one".