11002001202221 has 4 divisors (see below), whose sum is σ = 11002009289244. Its totient is φ = 11001993115200.

The previous prime is 11002001202097. The next prime is 11002001202223. The reversal of 11002001202221 is 12220210020011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3121797793321 + 7880203408900 = 1766861^2 + 2807170^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002001202221 - 2³⁴ = 10984821333037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002001202196 and 11002001202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002001202223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447100 + ... + 4908981.

It is an arithmetic number, because the mean of its divisors is an integer number (2750502322311).

Almost surely, 2^{11002001202221} is an apocalyptic number.

It is an amenable number.

11002001202221 is a deficient number, since it is larger than the sum of its proper divisors (8087023).

11002001202221 is an equidigital number, since it uses as much as digits as its factorization.

11002001202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087022.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11002001202221 its reverse (12220210020011), we get a palindrome (23222211222232).

The spelling of 11002001202221 in words is "eleven trillion, two billion, one million, two hundred two thousand, two hundred twenty-one".