11002021 has 4 divisors (see below), whose sum is σ = 11182444. Its totient is φ = 10821600.

The previous prime is 11002001. The next prime is 11002037. The reversal of 11002021 is 12020011.

11002021 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 2528100 + 8473921 = 1590^2 + 2911^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002021 - 2¹⁵ = 10969253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001995 and 11002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002001) 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, 90120 + ... + 90241.

It is an arithmetic number, because the mean of its divisors is an integer number (2795611).

Almost surely, 2^11002021 is an apocalyptic number.

It is an amenable number.

11002021 is a deficient number, since it is larger than the sum of its proper divisors (180423).

11002021 is an equidigital number, since it uses as much as digits as its factorization.

11002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180422.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 11002021 is about 3316.9294535760. The cubic root of 11002021 is about 222.4116284161.

Adding to 11002021 its reverse (12020011), we get a palindrome (23022032).

The spelling of 11002021 in words is "eleven million, two thousand, twenty-one".