12111223234 has 12 divisors (see below), whose sum is σ = 19968504822. Its totient is φ = 5505101360.

The previous prime is 12111223207. The next prime is 12111223253. The reversal of 12111223234 is 43232211121.

It can be written as a sum of positive squares in only one way, i.e., 12034748209 + 76475025 = 109703^2 + 8745^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25022947 + ... + 25023430.

Almost surely, 2^12111223234 is an apocalyptic number.

12111223234 is a deficient number, since it is larger than the sum of its proper divisors (7857281588).

12111223234 is a wasteful number, since it uses less digits than its factorization.

12111223234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50046401 (or 50046390 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 12111223234 its reverse (43232211121), we get a palindrome (55343434355).

The spelling of 12111223234 in words is "twelve billion, one hundred eleven million, two hundred twenty-three thousand, two hundred thirty-four".