122222113 has 4 divisors (see below), whose sum is σ = 131623828. Its totient is φ = 112820400.

The previous prime is 122222071. The next prime is 122222131. The reversal of 122222113 is 311222221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65415744 + 56806369 = 8088^2 + 7537^2 .

It is a cyclic number.

It is not a de Polignac number, because 122222113 - 2¹³ = 122213921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122222143) 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 3 ways as a sum of consecutive naturals, for example, 4700838 + ... + 4700863.

It is an arithmetic number, because the mean of its divisors is an integer number (32905957).

Almost surely, 2^122222113 is an apocalyptic number.

122222113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122222113 is a deficient number, since it is larger than the sum of its proper divisors (9401715).

122222113 is an equidigital number, since it uses as much as digits as its factorization.

122222113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9401714.

The product of its digits is 96, while the sum is 16.

The square root of 122222113 is about 11055.4110280894. The cubic root of 122222113 is about 496.2683698234.

Adding to 122222113 its reverse (311222221), we get a palindrome (433444334).

The spelling of 122222113 in words is "one hundred twenty-two million, two hundred twenty-two thousand, one hundred thirteen".