12211115234 has 4 divisors (see below), whose sum is σ = 18316672854. Its totient is φ = 6105557616.

The previous prime is 12211115221. The next prime is 12211115299. The reversal of 12211115234 is 43251111221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43251111221 = 17 ⋅2544183013.

It can be written as a sum of positive squares in only one way, i.e., 9883342225 + 2327773009 = 99415^2 + 48247^2 .

It is a super-2 number, since 2×12211115234² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052778807 + ... + 3052778810.

Almost surely, 2^12211115234 is an apocalyptic number.

12211115234 is a deficient number, since it is larger than the sum of its proper divisors (6105557620).

12211115234 is an equidigital number, since it uses as much as digits as its factorization.

12211115234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105557619.

The product of its digits is 480, while the sum is 23.

Adding to 12211115234 its reverse (43251111221), we get a palindrome (55462226455).

The spelling of 12211115234 in words is "twelve billion, two hundred eleven million, one hundred fifteen thousand, two hundred thirty-four".