1220222200211 has 16 divisors (see below), whose sum is σ = 1476631719936. Its totient is φ = 984340722816.

The previous prime is 1220222200189. The next prime is 1220222200259. The reversal of 1220222200211 is 1120022220221.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220222200211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1220222200211.

It is not an unprimeable number, because it can be changed into a prime (1220222200411) 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 15 ways as a sum of consecutive naturals, for example, 2910350 + ... + 3303116.

It is an arithmetic number, because the mean of its divisors is an integer number (92289482496).

Almost surely, 2^{1220222200211} is an apocalyptic number.

1220222200211 is a deficient number, since it is larger than the sum of its proper divisors (256409519725).

1220222200211 is a wasteful number, since it uses less digits than its factorization.

1220222200211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418898.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220222200211 its reverse (1120022220221), we get a palindrome (2340244420432).

The spelling of 1220222200211 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred thousand, two hundred eleven".