11022021 has 8 divisors (see below), whose sum is σ = 16328960. Its totient is φ = 7347996.

The previous prime is 11021993. The next prime is 11022023. The reversal of 11022021 is 12022011.

It is not a de Polignac number, because 11022021 - 2¹³ = 11013829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021994 and 11022012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204085 + ... + 204138.

It is an arithmetic number, because the mean of its divisors is an integer number (2041120).

Almost surely, 2^11022021 is an apocalyptic number.

It is an amenable number.

11022021 is a deficient number, since it is larger than the sum of its proper divisors (5306939).

11022021 is an equidigital number, since it uses as much as digits as its factorization.

11022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408232 (or 408226 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11022021 is about 3319.9429211961. The cubic root of 11022021 is about 222.5463170000.

Adding to 11022021 its reverse (12022011), we get a palindrome (23044032).

The spelling of 11022021 in words is "eleven million, twenty-two thousand, twenty-one".