12123432334 has 24 divisors (see below), whose sum is σ = 20728022040. Its totient is φ = 5300931168.

The previous prime is 12123432331. The next prime is 12123432367. The reversal of 12123432334 is 43323432121.

It is a happy number.

It is a super-2 number, since 2×12123432334² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123432331) 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, 937477 + ... + 950320.

It is an arithmetic number, because the mean of its divisors is an integer number (863667585).

Almost surely, 2^12123432334 is an apocalyptic number.

12123432334 is a deficient number, since it is larger than the sum of its proper divisors (8604589706).

12123432334 is a wasteful number, since it uses less digits than its factorization.

12123432334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887844 (or 1887831 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 12123432334 its reverse (43323432121), we get a palindrome (55446864455).

The spelling of 12123432334 in words is "twelve billion, one hundred twenty-three million, four hundred thirty-two thousand, three hundred thirty-four".