11122021 has 4 divisors (see below), whose sum is σ = 11174944. Its totient is φ = 11069100.

The previous prime is 11122003. The next prime is 11122039. The reversal of 11122021 is 12022111.

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.

It is an interprime number because it is at equal distance from previous prime (11122003) and next prime (11122039).

It is a cyclic number.

It is not a de Polignac number, because 11122021 - 2⁵ = 11121989 is a prime.

It is a super-2 number, since 2×11122021² = 247398702248882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121989 and 11122007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11129021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26145 + ... + 26566.

It is an arithmetic number, because the mean of its divisors is an integer number (2793736).

Almost surely, 2^11122021 is an apocalyptic number.

It is an amenable number.

11122021 is a deficient number, since it is larger than the sum of its proper divisors (52923).

11122021 is an equidigital number, since it uses as much as digits as its factorization.

11122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52922.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 11122021 is about 3334.9694151521. The cubic root of 11122021 is about 223.2173271942.

Adding to 11122021 its reverse (12022111), we get a palindrome (23144132).

The spelling of 11122021 in words is "eleven million, one hundred twenty-two thousand, twenty-one".