11012201220221 has 2 divisors, whose sum is σ = 11012201220222. Its totient is φ = 11012201220220.

The previous prime is 11012201220199. The next prime is 11012201220257. The reversal of 11012201220221 is 12202210221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8253778497721 + 2758422722500 = 2872939^2 + 1660850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012201220221 is a prime.

It is a super-3 number, since 3×11012201220221³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11012201220221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012201228221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506100610110 + 5506100610111.

It is an arithmetic number, because the mean of its divisors is an integer number (5506100610111).

Almost surely, 2^{11012201220221} is an apocalyptic number.

It is an amenable number.

11012201220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012201220221 is an equidigital number, since it uses as much as digits as its factorization.

11012201220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11012201220221 its reverse (12202210221011), we get a palindrome (23214411441232).

The spelling of 11012201220221 in words is "eleven trillion, twelve billion, two hundred one million, two hundred twenty thousand, two hundred twenty-one".