12345122222234 has 4 divisors (see below), whose sum is σ = 18517683333354. Its totient is φ = 6172561111116.

The previous prime is 12345122222231. The next prime is 12345122222297. The reversal of 12345122222234 is 43222222154321.

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

It can be written as a sum of positive squares in only one way, i.e., 10361658416209 + 1983463806025 = 3218953^2 + 1408355^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12345122222194 and 12345122222203.

It is not an unprimeable number, because it can be changed into a prime (12345122222231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3086280555557 + ... + 3086280555560.

Almost surely, 2^{12345122222234} is an apocalyptic number.

12345122222234 is a deficient number, since it is larger than the sum of its proper divisors (6172561111120).

12345122222234 is an equidigital number, since it uses as much as digits as its factorization.

12345122222234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172561111119.

The product of its digits is 92160, while the sum is 35.

Adding to 12345122222234 its reverse (43222222154321), we get a palindrome (55567344376555).

The spelling of 12345122222234 in words is "twelve trillion, three hundred forty-five billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred thirty-four".