123212123424 has 288 divisors, whose sum is σ = 382685546880. Its totient is φ = 37377552384.

The previous prime is 123212123413. The next prime is 123212123471. The reversal of 123212123424 is 424321212321.

123212123424 is a `hidden beast` number, since 1 + 2 + 3 + 21 + 212 + 3 + 424 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109133292 + ... + 109134420.

It is an arithmetic number, because the mean of its divisors is an integer number (1328769260).

Almost surely, 2^123212123424 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 123212123424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191342773440).

123212123424 is an abundant number, since it is smaller than the sum of its proper divisors (259473423456).

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

123212123424 is a wasteful number, since it uses less digits than its factorization.

123212123424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 1533 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 123212123424 its reverse (424321212321), we get a palindrome (547533335745).

The spelling of 123212123424 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred twenty-three thousand, four hundred twenty-four".