11002121002221 has 4 divisors (see below), whose sum is σ = 14669494669632. Its totient is φ = 7334747334812.

The previous prime is 11002121002207. The next prime is 11002121002259. The reversal of 11002121002221 is 12220012120011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11002121002221 - 2⁵ = 11002121002189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11002121002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002121002021) 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, 1833686833701 + ... + 1833686833706.

It is an arithmetic number, because the mean of its divisors is an integer number (3667373667408).

Almost surely, 2^{11002121002221} is an apocalyptic number.

It is an amenable number.

11002121002221 is a deficient number, since it is larger than the sum of its proper divisors (3667373667411).

11002121002221 is an equidigital number, since it uses as much as digits as its factorization.

11002121002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667373667410.

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

Adding to 11002121002221 its reverse (12220012120011), we get a palindrome (23222133122232).

The spelling of 11002121002221 in words is "eleven trillion, two billion, one hundred twenty-one million, two thousand, two hundred twenty-one".