1222510211 has 16 divisors (see below), whose sum is σ = 1342705728. Its totient is φ = 1106179200.

The previous prime is 1222510187. The next prime is 1222510213. The reversal of 1222510211 is 1120152221.

It is a cyclic number.

It is not a de Polignac number, because 1222510211 - 2⁶ = 1222510147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222510211.

It is not an unprimeable number, because it can be changed into a prime (1222510213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244145 + ... + 249101.

It is an arithmetic number, because the mean of its divisors is an integer number (83919108).

Almost surely, 2^1222510211 is an apocalyptic number.

1222510211 is a deficient number, since it is larger than the sum of its proper divisors (120195517).

1222510211 is a wasteful number, since it uses less digits than its factorization.

1222510211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1222510211 is about 34964.4134942945. The cubic root of 1222510211 is about 1069.2620792121.

Adding to 1222510211 its reverse (1120152221), we get a palindrome (2342662432).

The spelling of 1222510211 in words is "one billion, two hundred twenty-two million, five hundred ten thousand, two hundred eleven".