12200551 has 12 divisors (see below), whose sum is σ = 13645800. Its totient is φ = 10897040.

The previous prime is 12200537. The next prime is 12200581. The reversal of 12200551 is 15500221.

It is not a de Polignac number, because 12200551 - 2¹³ = 12192359 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200521) 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 11 ways as a sum of consecutive naturals, for example, 6285 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (1137150).

Almost surely, 2^12200551 is an apocalyptic number.

12200551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12200551 is a deficient number, since it is larger than the sum of its proper divisors (1445249).

12200551 is a wasteful number, since it uses less digits than its factorization.

12200551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 12200551 is about 3492.9287138446. The cubic root of 12200551 is about 230.2112174401.

Adding to 12200551 its reverse (15500221), we get a palindrome (27700772).

The spelling of 12200551 in words is "twelve million, two hundred thousand, five hundred fifty-one".