12342254521 has 2 divisors, whose sum is σ = 12342254522. Its totient is φ = 12342254520.

The previous prime is 12342254497. The next prime is 12342254543. The reversal of 12342254521 is 12545224321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10566812025 + 1775442496 = 102795^2 + 42136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12342254521 is a prime.

It is a super-3 number, since 3×12342254521³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (12342254591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6171127260 + 6171127261.

It is an arithmetic number, because the mean of its divisors is an integer number (6171127261).

Almost surely, 2^12342254521 is an apocalyptic number.

It is an amenable number.

12342254521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12342254521 is an equidigital number, since it uses as much as digits as its factorization.

12342254521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 31.

Adding to 12342254521 its reverse (12545224321), we get a palindrome (24887478842).

The spelling of 12342254521 in words is "twelve billion, three hundred forty-two million, two hundred fifty-four thousand, five hundred twenty-one".