11002042032221 has 4 divisors (see below), whose sum is σ = 11002675187772. Its totient is φ = 11001408876672.

The previous prime is 11002042032203. The next prime is 11002042032263. The reversal of 11002042032221 is 12223024020011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5266084092025 + 5735957940196 = 2294795^2 + 2394986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002042032221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002042032193 and 11002042032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002042232221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316551710 + ... + 316586463.

It is an arithmetic number, because the mean of its divisors is an integer number (2750668796943).

Almost surely, 2^{11002042032221} is an apocalyptic number.

It is an amenable number.

11002042032221 is a deficient number, since it is larger than the sum of its proper divisors (633155551).

11002042032221 is an equidigital number, since it uses as much as digits as its factorization.

11002042032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633155550.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11002042032221 its reverse (12223024020011), we get a palindrome (23225066052232).

The spelling of 11002042032221 in words is "eleven trillion, two billion, forty-two million, thirty-two thousand, two hundred twenty-one".