11002213121 has 4 divisors (see below), whose sum is σ = 11015813700. Its totient is φ = 10988612544.

The previous prime is 11002213091. The next prime is 11002213129. The reversal of 11002213121 is 12131220011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12131220011 = 6971 ⋅1740241.

It can be written as a sum of positive squares in 2 ways, for example, as 8595329521 + 2406883600 = 92711^2 + 49060^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002213121 - 2¹⁰ = 11002212097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002213096 and 11002213105.

It is not an unprimeable number, because it can be changed into a prime (11002213129) 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, 6799076 + ... + 6800693.

It is an arithmetic number, because the mean of its divisors is an integer number (2753953425).

Almost surely, 2^11002213121 is an apocalyptic number.

It is an amenable number.

11002213121 is a deficient number, since it is larger than the sum of its proper divisors (13600579).

11002213121 is an equidigital number, since it uses as much as digits as its factorization.

11002213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13600578.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11002213121 its reverse (12131220011), we get a palindrome (23133433132).

The spelling of 11002213121 in words is "eleven billion, two million, two hundred thirteen thousand, one hundred twenty-one".