12123434334 has 16 divisors (see below), whose sum is σ = 26451129600. Its totient is φ = 3673767960.

The previous prime is 12123434333. The next prime is 12123434341. The reversal of 12123434334 is 43343432121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123434333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91844134 + ... + 91844265.

It is an arithmetic number, because the mean of its divisors is an integer number (1653195600).

Almost surely, 2^12123434334 is an apocalyptic number.

12123434334 is an abundant number, since it is smaller than the sum of its proper divisors (14327695266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123434334 is a wasteful number, since it uses less digits than its factorization.

12123434334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183688415.

The product of its digits is 20736, while the sum is 30.

Adding to 12123434334 its reverse (43343432121), we get a palindrome (55466866455).

The spelling of 12123434334 in words is "twelve billion, one hundred twenty-three million, four hundred thirty-four thousand, three hundred thirty-four".