11100011012221 has 2 divisors, whose sum is σ = 11100011012222. Its totient is φ = 11100011012220.

The previous prime is 11100011012219. The next prime is 11100011012227. The reversal of 11100011012221 is 12221011000111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8233714608025 + 2866296404196 = 2869445^2 + 1693014^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100011012221 - 2¹ = 11100011012219 is a prime.

It is a super-2 number, since 2×11100011012221² (a number of 27 digits) contains 22 as substring.

Together with 11100011012219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100011012227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550005506110 + 5550005506111.

It is an arithmetic number, because the mean of its divisors is an integer number (5550005506111).

Almost surely, 2^{11100011012221} is an apocalyptic number.

It is an amenable number.

11100011012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100011012221 is an equidigital number, since it uses as much as digits as its factorization.

11100011012221 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 13.

Adding to 11100011012221 its reverse (12221011000111), we get a palindrome (23321022012332).

The spelling of 11100011012221 in words is "eleven trillion, one hundred billion, eleven million, twelve thousand, two hundred twenty-one".