12122323544 has 8 divisors (see below), whose sum is σ = 22729356660. Its totient is φ = 6061161768.

The previous prime is 12122323537. The next prime is 12122323547. The reversal of 12122323544 is 44532322121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122323547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757645214 + ... + 757645229.

Almost surely, 2^12122323544 is an apocalyptic number.

It is an amenable number.

12122323544 is a deficient number, since it is larger than the sum of its proper divisors (10607033116).

12122323544 is a wasteful number, since it uses less digits than its factorization.

12122323544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515290449 (or 1515290445 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

Adding to 12122323544 its reverse (44532322121), we get a palindrome (56654645665).

The spelling of 12122323544 in words is "twelve billion, one hundred twenty-two million, three hundred twenty-three thousand, five hundred forty-four".