1222222210211 has 4 divisors (see below), whose sum is σ = 1222224618192. Its totient is φ = 1222219802232.

The previous prime is 1222222210189. The next prime is 1222222210243. The reversal of 1222222210211 is 1120122222221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222222210211 is a prime.

It is a super-2 number, since 2×1222222210211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222222210711) 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 3 ways as a sum of consecutive naturals, for example, 113255 + ... + 1567568.

It is an arithmetic number, because the mean of its divisors is an integer number (305556154548).

Almost surely, 2^{1222222210211} is an apocalyptic number.

1222222210211 is a deficient number, since it is larger than the sum of its proper divisors (2407981).

1222222210211 is an equidigital number, since it uses as much as digits as its factorization.

1222222210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407980.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222222210211 its reverse (1120122222221), we get a palindrome (2342344432432).

The spelling of 1222222210211 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred ten thousand, two hundred eleven".