11002021112021 has 4 divisors (see below), whose sum is σ = 11002152640044. Its totient is φ = 11001889584000.

The previous prime is 11002021112011. The next prime is 11002021112051. The reversal of 11002021112021 is 12021112020011.

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 5657666602225 + 5344354509796 = 2378585^2 + 2311786^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002021112021 - 2⁴² = 6603974600917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002021111987 and 11002021112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002021112011) 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, 65638460 + ... + 65805861.

It is an arithmetic number, because the mean of its divisors is an integer number (2750538160011).

Almost surely, 2^{11002021112021} is an apocalyptic number.

It is an amenable number.

11002021112021 is a deficient number, since it is larger than the sum of its proper divisors (131528023).

11002021112021 is an equidigital number, since it uses as much as digits as its factorization.

11002021112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131528022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11002021112021 its reverse (12021112020011), we get a palindrome (23023133132032).

The spelling of 11002021112021 in words is "eleven trillion, two billion, twenty-one million, one hundred twelve thousand, twenty-one".