1200003203211 has 4 divisors (see below), whose sum is σ = 1600004270952. Its totient is φ = 800002135472.

The previous prime is 1200003203197. The next prime is 1200003203233. The reversal of 1200003203211 is 1123023000021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200003203211 - 2²² = 1199999008907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200003203011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200000533866 + ... + 200000533871.

It is an arithmetic number, because the mean of its divisors is an integer number (400001067738).

Almost surely, 2^{1200003203211} is an apocalyptic number.

1200003203211 is a deficient number, since it is larger than the sum of its proper divisors (400001067741).

1200003203211 is an equidigital number, since it uses as much as digits as its factorization.

1200003203211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400001067740.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1200003203211 its reverse (1123023000021), we get a palindrome (2323026203232).

The spelling of 1200003203211 in words is "one trillion, two hundred billion, three million, two hundred three thousand, two hundred eleven".