1222222113 has 12 divisors (see below), whose sum is σ = 2017636608. Its totient is φ = 698412600.

The previous prime is 1222222103. The next prime is 1222222121. The reversal of 1222222113 is 3112222221.

It is not a de Polignac number, because 1222222113 - 2⁴ = 1222222097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222222103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9700113 + ... + 9700238.

It is an arithmetic number, because the mean of its divisors is an integer number (168136384).

Almost surely, 2^1222222113 is an apocalyptic number.

It is an amenable number.

1222222113 is a deficient number, since it is larger than the sum of its proper divisors (795414495).

1222222113 is a wasteful number, since it uses less digits than its factorization.

1222222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19400364 (or 19400361 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1222222113 is about 34960.2933769155. The cubic root of 1222222113 is about 1069.1780781501.

Adding to 1222222113 its reverse (3112222221), we get a palindrome (4334444334).

The spelling of 1222222113 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred thirteen".