11196821 has 4 divisors (see below), whose sum is σ = 11305632. Its totient is φ = 11088012.

The previous prime is 11196799. The next prime is 11196827. The reversal of 11196821 is 12869111.

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 11196821 - 2¹⁴ = 11180437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11196827) 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, 54251 + ... + 54456.

It is an arithmetic number, because the mean of its divisors is an integer number (2826408).

Almost surely, 2^11196821 is an apocalyptic number.

It is an amenable number.

11196821 is a deficient number, since it is larger than the sum of its proper divisors (108811).

11196821 is a wasteful number, since it uses less digits than its factorization.

11196821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108810.

The product of its digits is 864, while the sum is 29.

The square root of 11196821 is about 3346.1651184602. The cubic root of 11196821 is about 223.7166178885.

The spelling of 11196821 in words is "eleven million, one hundred ninety-six thousand, eight hundred twenty-one".