1222111200211 has 4 divisors (see below), whose sum is σ = 1333212218424. Its totient is φ = 1111010182000.

The previous prime is 1222111200199. The next prime is 1222111200217. The reversal of 1222111200211 is 1120021112221.

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 1222111200211 - 2¹⁹ = 1222110675923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222111200217) 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 3 ways as a sum of consecutive naturals, for example, 55550509090 + ... + 55550509111.

It is an arithmetic number, because the mean of its divisors is an integer number (333303054606).

Almost surely, 2^{1222111200211} is an apocalyptic number.

1222111200211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222111200211 is a deficient number, since it is larger than the sum of its proper divisors (111101018213).

1222111200211 is a wasteful number, since it uses less digits than its factorization.

1222111200211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111101018212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222111200211 its reverse (1120021112221), we get a palindrome (2342132312432).

It can be divided in two parts, 12221 and 11200211, that multiplied together give a palindrome (136877778631).

The spelling of 1222111200211 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, two hundred thousand, two hundred eleven".