1101220200221 has 2 divisors, whose sum is σ = 1101220200222. Its totient is φ = 1101220200220.

The previous prime is 1101220200217. The next prime is 1101220200239. The reversal of 1101220200221 is 1220020221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869209394596 + 232010805625 = 932314^2 + 481675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101220200221 - 2² = 1101220200217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101220200196 and 1101220200205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101220206221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610100110 + 550610100111.

It is an arithmetic number, because the mean of its divisors is an integer number (550610100111).

Almost surely, 2^{1101220200221} is an apocalyptic number.

It is an amenable number.

1101220200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101220200221 is an equidigital number, since it uses as much as digits as its factorization.

1101220200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1101220200221 its reverse (1220020221011), we get a palindrome (2321240421232).

The spelling of 1101220200221 in words is "one trillion, one hundred one billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".