11000002001221 has 8 divisors (see below), whose sum is σ = 11186532005184. Its totient is φ = 10814349786240.

The previous prime is 11000002001201. The next prime is 11000002001293. The reversal of 11000002001221 is 12210020000011.

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 11000002001221 - 2¹⁷ = 11000001870149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000002001198 and 11000002001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000002001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219421971 + ... + 219472096.

It is an arithmetic number, because the mean of its divisors is an integer number (1398316500648).

Almost surely, 2^{11000002001221} is an apocalyptic number.

It is an amenable number.

11000002001221 is a deficient number, since it is larger than the sum of its proper divisors (186530003963).

11000002001221 is an equidigital number, since it uses as much as digits as its factorization.

11000002001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438894491.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11000002001221 its reverse (12210020000011), we get a palindrome (23210022001232).

The spelling of 11000002001221 in words is "eleven trillion, two million, one thousand, two hundred twenty-one".