1172200105 has 4 divisors (see below), whose sum is σ = 1406640132. Its totient is φ = 937760080.

The previous prime is 1172200103. The next prime is 1172200111. The reversal of 1172200105 is 5010022711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 349428249 + 822771856 = 18693^2 + 28684^2 .

It is not a de Polignac number, because 1172200105 - 2¹ = 1172200103 is a prime.

It is a super-2 number, since 2×1172200105² = 2748106172324022050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172200103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117220006 + ... + 117220015.

It is an arithmetic number, because the mean of its divisors is an integer number (351660033).

Almost surely, 2^1172200105 is an apocalyptic number.

It is an amenable number.

1172200105 is a deficient number, since it is larger than the sum of its proper divisors (234440027).

1172200105 is an equidigital number, since it uses as much as digits as its factorization.

1172200105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234440026.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1172200105 is about 34237.4079772403. The cubic root of 1172200105 is about 1054.3883174312.

Adding to 1172200105 its reverse (5010022711), we get a palindrome (6182222816).

The spelling of 1172200105 in words is "one billion, one hundred seventy-two million, two hundred thousand, one hundred five".