11098021 has 4 divisors (see below), whose sum is σ = 12106944. Its totient is φ = 10089100.

The previous prime is 11098019. The next prime is 11098037. The reversal of 11098021 is 12089011.

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 a cyclic number.

It is not a de Polignac number, because 11098021 - 2¹ = 11098019 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11097983 and 11098001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11098001) 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, 504445 + ... + 504466.

It is an arithmetic number, because the mean of its divisors is an integer number (3026736).

Almost surely, 2^11098021 is an apocalyptic number.

11098021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11098021 is a deficient number, since it is larger than the sum of its proper divisors (1008923).

11098021 is a wasteful number, since it uses less digits than its factorization.

11098021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008922.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 11098021 is about 3331.3692380161. The cubic root of 11098021 is about 223.0566527421.

The spelling of 11098021 in words is "eleven million, ninety-eight thousand, twenty-one".