1200222001105 has 4 divisors (see below), whose sum is σ = 1440266401332. Its totient is φ = 960177600880.

The previous prime is 1200222001081. The next prime is 1200222001109. The reversal of 1200222001105 is 5011002220021.

It is a happy number.

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 312775103169 + 887446897936 = 559263^2 + 942044^2 .

It is not a de Polignac number, because 1200222001105 - 2⁷ = 1200222000977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200222001109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120022200106 + ... + 120022200115.

It is an arithmetic number, because the mean of its divisors is an integer number (360066600333).

Almost surely, 2^{1200222001105} is an apocalyptic number.

It is an amenable number.

1200222001105 is a deficient number, since it is larger than the sum of its proper divisors (240044400227).

1200222001105 is an equidigital number, since it uses as much as digits as its factorization.

1200222001105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240044400226.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 1200222001105 its reverse (5011002220021), we get a palindrome (6211224221126).

The spelling of 1200222001105 in words is "one trillion, two hundred billion, two hundred twenty-two million, one thousand, one hundred five".