1222220100211 has 64 divisors (see below), whose sum is σ = 1426658365440. Its totient is φ = 1036189440000.

The previous prime is 1222220100209. The next prime is 1222220100229. The reversal of 1222220100211 is 1120010222221.

It is a happy number.

It is not a de Polignac number, because 1222220100211 - 2¹ = 1222220100209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222220100011) 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 63 ways as a sum of consecutive naturals, for example, 1197080881 + ... + 1197081901.

It is an arithmetic number, because the mean of its divisors is an integer number (22291536960).

Almost surely, 2^{1222220100211} is an apocalyptic number.

1222220100211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222220100211 is a deficient number, since it is larger than the sum of its proper divisors (204438265229).

1222220100211 is a wasteful number, since it uses less digits than its factorization.

1222220100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222220100211 its reverse (1120010222221), we get a palindrome (2342230322432).

The spelling of 1222220100211 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred thousand, two hundred eleven".