1101201221211 has 64 divisors (see below), whose sum is σ = 1858011058176. Its totient is φ = 564593587200.

The previous prime is 1101201221207. The next prime is 1101201221243. The reversal of 1101201221211 is 1121221021011.

It is a happy number.

It is not a de Polignac number, because 1101201221211 - 2² = 1101201221207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101201221311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2851785 + ... + 3214821.

It is an arithmetic number, because the mean of its divisors is an integer number (29031422784).

Almost surely, 2^{1101201221211} is an apocalyptic number.

1101201221211 is a deficient number, since it is larger than the sum of its proper divisors (756809836965).

1101201221211 is a wasteful number, since it uses less digits than its factorization.

1101201221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363372.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1101201221211 its reverse (1121221021011), we get a palindrome (2222422242222).

It can be divided in two parts, 110120 and 1221211, that added together give a palindrome (1331331).

The spelling of 1101201221211 in words is "one trillion, one hundred one billion, two hundred one million, two hundred twenty-one thousand, two hundred eleven".