1200020221211 has 4 divisors (see below), whose sum is σ = 1371451681392. Its totient is φ = 1028588761032.

The previous prime is 1200020221201. The next prime is 1200020221217. The reversal of 1200020221211 is 1121220200021.

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

It is not a de Polignac number, because 1200020221211 - 2²² = 1200016026907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200020221217) 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, 85715730080 + ... + 85715730093.

It is an arithmetic number, because the mean of its divisors is an integer number (342862920348).

Almost surely, 2^{1200020221211} is an apocalyptic number.

1200020221211 is a deficient number, since it is larger than the sum of its proper divisors (171431460181).

1200020221211 is an equidigital number, since it uses as much as digits as its factorization.

1200020221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171431460180.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200020221211 its reverse (1121220200021), we get a palindrome (2321240421232).

The spelling of 1200020221211 in words is "one trillion, two hundred billion, twenty million, two hundred twenty-one thousand, two hundred eleven".