11002021111021 has 4 divisors (see below), whose sum is σ = 11649198823452. Its totient is φ = 10354843398592.

The previous prime is 11002021111009. The next prime is 11002021111031. The reversal of 11002021111021 is 12011112020011.

It is a happy number.

11002021111021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 6028920408996 + 4973100702025 = 2455386^2 + 2230045^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002021111021 - 2⁴¹ = 8802997855469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002021110992 and 11002021111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002021111031) 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, 323588856190 + ... + 323588856223.

It is an arithmetic number, because the mean of its divisors is an integer number (2912299705863).

Almost surely, 2^{11002021111021} is an apocalyptic number.

It is an amenable number.

11002021111021 is a deficient number, since it is larger than the sum of its proper divisors (647177712431).

11002021111021 is an equidigital number, since it uses as much as digits as its factorization.

11002021111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647177712430.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11002021111021 its reverse (12011112020011), we get a palindrome (23013133131032).

The spelling of 11002021111021 in words is "eleven trillion, two billion, twenty-one million, one hundred eleven thousand, twenty-one".