12196811 has 4 divisors (see below), whose sum is σ = 13305624. Its totient is φ = 11088000.

The previous prime is 12196783. The next prime is 12196813. The reversal of 12196811 is 11869121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11869121 = 11 ⋅1079011.

It is not a de Polignac number, because 12196811 - 2¹⁰ = 12195787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12196813) 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, 554390 + ... + 554411.

It is an arithmetic number, because the mean of its divisors is an integer number (3326406).

Almost surely, 2^12196811 is an apocalyptic number.

12196811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12196811 is a deficient number, since it is larger than the sum of its proper divisors (1108813).

12196811 is a wasteful number, since it uses less digits than its factorization.

12196811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108812.

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

The square root of 12196811 is about 3492.3933054569. The cubic root of 12196811 is about 230.1876917828.

The spelling of 12196811 in words is "twelve million, one hundred ninety-six thousand, eight hundred eleven".