11011201011221 has 2 divisors, whose sum is σ = 11011201011222. Its totient is φ = 11011201011220.

The previous prime is 11011201011193. The next prime is 11011201011227. The reversal of 11011201011221 is 12211010211011.

11011201011221 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., 10156879764196 + 854321247025 = 3186986^2 + 924295^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011201011221 - 2⁶ = 11011201011157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011201011196 and 11011201011205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011201011227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505600505610 + 5505600505611.

It is an arithmetic number, because the mean of its divisors is an integer number (5505600505611).

Almost surely, 2^{11011201011221} is an apocalyptic number.

It is an amenable number.

11011201011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011201011221 is an equidigital number, since it uses as much as digits as its factorization.

11011201011221 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 14.

Adding to 11011201011221 its reverse (12211010211011), we get a palindrome (23222211222232).

The spelling of 11011201011221 in words is "eleven trillion, eleven billion, two hundred one million, eleven thousand, two hundred twenty-one".