1201221200211 has 4 divisors (see below), whose sum is σ = 1601628266952. Its totient is φ = 800814133472.

The previous prime is 1201221200167. The next prime is 1201221200243. The reversal of 1201221200211 is 1120021221021.

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 1201221200211 - 2²⁷ = 1201086982483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201223200211) 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, 200203533366 + ... + 200203533371.

It is an arithmetic number, because the mean of its divisors is an integer number (400407066738).

Almost surely, 2^{1201221200211} is an apocalyptic number.

1201221200211 is a deficient number, since it is larger than the sum of its proper divisors (400407066741).

1201221200211 is an equidigital number, since it uses as much as digits as its factorization.

1201221200211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400407066740.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1201221200211 its reverse (1120021221021), we get a palindrome (2321242421232).

The spelling of 1201221200211 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred thousand, two hundred eleven".