11002120213121 has 4 divisors (see below), whose sum is σ = 11002126859712. Its totient is φ = 11002113566532.

The previous prime is 11002120213027. The next prime is 11002120213127. The reversal of 11002120213121 is 12131202120011.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002120213121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11002120213121.

It is not an unprimeable number, because it can be changed into a prime (11002120213127) 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 3 ways as a sum of consecutive naturals, for example, 1353620 + ... + 4882266.

It is an arithmetic number, because the mean of its divisors is an integer number (2750531714928).

Almost surely, 2^{11002120213121} is an apocalyptic number.

It is an amenable number.

11002120213121 is a deficient number, since it is larger than the sum of its proper divisors (6646591).

11002120213121 is an equidigital number, since it uses as much as digits as its factorization.

11002120213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6646590.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11002120213121 its reverse (12131202120011), we get a palindrome (23133322333132).

The spelling of 11002120213121 in words is "eleven trillion, two billion, one hundred twenty million, two hundred thirteen thousand, one hundred twenty-one".