11010001222221 has 32 divisors (see below), whose sum is σ = 14760085818240. Its totient is φ = 7300101329664.

The previous prime is 11010001222063. The next prime is 11010001222243. The reversal of 11010001222221 is 12222210001011.

11010001222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11010001222221 - 2¹⁷ = 11010001091149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11010001222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010001226221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555685911 + ... + 555705723.

It is an arithmetic number, because the mean of its divisors is an integer number (461252681820).

Almost surely, 2^{11010001222221} is an apocalyptic number.

It is an amenable number.

11010001222221 is a deficient number, since it is larger than the sum of its proper divisors (3750084596019).

11010001222221 is a wasteful number, since it uses less digits than its factorization.

11010001222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21565.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11010001222221 its reverse (12222210001011), we get a palindrome (23232211223232).

The spelling of 11010001222221 in words is "eleven trillion, ten billion, one million, two hundred twenty-two thousand, two hundred twenty-one".