1200221002011 has 4 divisors (see below), whose sum is σ = 1600294669352. Its totient is φ = 800147334672.

The previous prime is 1200221002003. The next prime is 1200221002039. The reversal of 1200221002011 is 1102001220021.

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

It is not a de Polignac number, because 1200221002011 - 2³ = 1200221002003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200221002111) 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, 200036833666 + ... + 200036833671.

It is an arithmetic number, because the mean of its divisors is an integer number (400073667338).

Almost surely, 2^{1200221002011} is an apocalyptic number.

1200221002011 is a deficient number, since it is larger than the sum of its proper divisors (400073667341).

1200221002011 is an equidigital number, since it uses as much as digits as its factorization.

1200221002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400073667340.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200221002011 its reverse (1102001220021), we get a palindrome (2302222222032).

The spelling of 1200221002011 in words is "one trillion, two hundred billion, two hundred twenty-one million, two thousand, eleven".