11007021 has 4 divisors (see below), whose sum is σ = 14676032. Its totient is φ = 7338012.

The previous prime is 11007001. The next prime is 11007043. The reversal of 11007021 is 12070011.

11007021 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12070011 = 3 ⋅4023337.

It is a de Polignac number, because none of the positive numbers 2^k-11007021 is a prime.

It is a super-2 number, since 2×11007021² = 242309022588882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11006988 and 11007006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11007001) 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, 1834501 + ... + 1834506.

It is an arithmetic number, because the mean of its divisors is an integer number (3669008).

Almost surely, 2^11007021 is an apocalyptic number.

It is an amenable number.

11007021 is a deficient number, since it is larger than the sum of its proper divisors (3669011).

11007021 is an equidigital number, since it uses as much as digits as its factorization.

11007021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669010.

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 11007021 is about 3317.6830770886. The cubic root of 11007021 is about 222.4453158547.

Adding to 11007021 its reverse (12070011), we get a palindrome (23077032).

The spelling of 11007021 in words is "eleven million, seven thousand, twenty-one".