12200455 has 4 divisors (see below), whose sum is σ = 14640552. Its totient is φ = 9760360.

The previous prime is 12200443. The next prime is 12200471. The reversal of 12200455 is 55400221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55400221 = 811 ⋅68311.

It is a de Polignac number, because none of the positive numbers 2^k-12200455 is a prime.

It is a super-2 number, since 2×12200455² = 297702204414050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220041 + ... + 1220050.

It is an arithmetic number, because the mean of its divisors is an integer number (3660138).

Almost surely, 2^12200455 is an apocalyptic number.

12200455 is a deficient number, since it is larger than the sum of its proper divisors (2440097).

12200455 is an equidigital number, since it uses as much as digits as its factorization.

12200455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440096.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12200455 is about 3492.9149717678. The cubic root of 12200455 is about 230.2106136331.

Adding to 12200455 its reverse (55400221), we get a palindrome (67600676).

The spelling of 12200455 in words is "twelve million, two hundred thousand, four hundred fifty-five".