11223201101221 has 2 divisors, whose sum is σ = 11223201101222. Its totient is φ = 11223201101220.

The previous prime is 11223201101209. The next prime is 11223201101227. The reversal of 11223201101221 is 12210110232211.

11223201101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10546184805121 + 677016296100 = 3247489^2 + 822810^2 .

It is an emirp because it is prime and its reverse (12210110232211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11223201101221 - 2²⁷ = 11223066883493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223201101227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611600550610 + 5611600550611.

It is an arithmetic number, because the mean of its divisors is an integer number (5611600550611).

Almost surely, 2^{11223201101221} is an apocalyptic number.

It is an amenable number.

11223201101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223201101221 is an equidigital number, since it uses as much as digits as its factorization.

11223201101221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11223201101221 its reverse (12210110232211), we get a palindrome (23433311333432).

The spelling of 11223201101221 in words is "eleven trillion, two hundred twenty-three billion, two hundred one million, one hundred one thousand, two hundred twenty-one".