1222424111 has 4 divisors (see below), whose sum is σ = 1239641424. Its totient is φ = 1205206800.

The previous prime is 1222424107. The next prime is 1222424183. The reversal of 1222424111 is 1114242221.

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 1222424111 - 2² = 1222424107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222414111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8608550 + ... + 8608691.

It is an arithmetic number, because the mean of its divisors is an integer number (309910356).

Almost surely, 2^1222424111 is an apocalyptic number.

1222424111 is a deficient number, since it is larger than the sum of its proper divisors (17217313).

1222424111 is an equidigital number, since it uses as much as digits as its factorization.

1222424111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17217312.

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

The square root of 1222424111 is about 34963.1822207304. The cubic root of 1222424111 is about 1069.2369763198.

Adding to 1222424111 its reverse (1114242221), we get a palindrome (2336666332).

The spelling of 1222424111 in words is "one billion, two hundred twenty-two million, four hundred twenty-four thousand, one hundred eleven".