1222210211 has 4 divisors (see below), whose sum is σ = 1235943000. Its totient is φ = 1208477424.

The previous prime is 1222210183. The next prime is 1222210217. The reversal of 1222210211 is 1120122221.

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 1222210211 - 2¹⁴ = 1222193827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222210217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6866261 + ... + 6866438.

It is an arithmetic number, because the mean of its divisors is an integer number (308985750).

Almost surely, 2^1222210211 is an apocalyptic number.

1222210211 is a deficient number, since it is larger than the sum of its proper divisors (13732789).

1222210211 is an equidigital number, since it uses as much as digits as its factorization.

1222210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13732788.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1222210211 is about 34960.1231548174. The cubic root of 1222210211 is about 1069.1746075864.

Adding to 1222210211 its reverse (1120122221), we get a palindrome (2342332432).

The spelling of 1222210211 in words is "one billion, two hundred twenty-two million, two hundred ten thousand, two hundred eleven".