11010011201221 has 8 divisors (see below), whose sum is σ = 11055872115288. Its totient is φ = 10964151744000.

The previous prime is 11010011201219. The next prime is 11010011201249. The reversal of 11010011201221 is 12210211001011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4196397317121 + 6813613884100 = 2048511^2 + 2610290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11010011201221 - 2¹ = 11010011201219 is a prime.

It is a super-3 number, since 3×11010011201221³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010011201251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16381761 + ... + 17040601.

It is an arithmetic number, because the mean of its divisors is an integer number (1381984014411).

Almost surely, 2^{11010011201221} is an apocalyptic number.

It is an amenable number.

11010011201221 is a deficient number, since it is larger than the sum of its proper divisors (45860914067).

11010011201221 is an equidigital number, since it uses as much as digits as its factorization.

11010011201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728423.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11010011201221 its reverse (12210211001011), we get a palindrome (23220222202232).

The spelling of 11010011201221 in words is "eleven trillion, ten billion, eleven million, two hundred one thousand, two hundred twenty-one".