12234021423 has 32 divisors (see below), whose sum is σ = 18637920000. Its totient is φ = 7071376896.

The previous prime is 12234021413. The next prime is 12234021571. The reversal of 12234021423 is 32412043221.

It is a happy number.

It is not a de Polignac number, because 12234021423 - 2⁴ = 12234021407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12234021393 and 12234021402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12234021413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312348 + ... + 349326.

It is an arithmetic number, because the mean of its divisors is an integer number (582435000).

Almost surely, 2^12234021423 is an apocalyptic number.

12234021423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12234021423 is a deficient number, since it is larger than the sum of its proper divisors (6403898577).

12234021423 is a wasteful number, since it uses less digits than its factorization.

12234021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37511.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12234021423 its reverse (32412043221), we get a palindrome (44646064644).

The spelling of 12234021423 in words is "twelve billion, two hundred thirty-four million, twenty-one thousand, four hundred twenty-three".