12121323024 has 80 divisors (see below), whose sum is σ = 33004584000. Its totient is φ = 3827486208.

The previous prime is 12121323007. The next prime is 12121323031. The reversal of 12121323024 is 42032312121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8374 + ... + 155925.

It is an arithmetic number, because the mean of its divisors is an integer number (412557300).

Almost surely, 2^12121323024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12121323024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16502292000).

12121323024 is an abundant number, since it is smaller than the sum of its proper divisors (20883260976).

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

12121323024 is a wasteful number, since it uses less digits than its factorization.

12121323024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164392 (or 164386 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12121323024 its reverse (42032312121), we get a palindrome (54153635145).

The spelling of 12121323024 in words is "twelve billion, one hundred twenty-one million, three hundred twenty-three thousand, twenty-four".