12346121537 has 2 divisors, whose sum is σ = 12346121538. Its totient is φ = 12346121536.

The previous prime is 12346121521. The next prime is 12346121611. The reversal of 12346121537 is 73512164321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12306796096 + 39325441 = 110936^2 + 6271^2 .

It is an emirp because it is prime and its reverse (73512164321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12346121537 - 2⁴ = 12346121521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12346121497 and 12346121506.

It is not a weakly prime, because it can be changed into another prime (12346124537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173060768 + 6173060769.

It is an arithmetic number, because the mean of its divisors is an integer number (6173060769).

Almost surely, 2^12346121537 is an apocalyptic number.

It is an amenable number.

12346121537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12346121537 is an equidigital number, since it uses as much as digits as its factorization.

12346121537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

Adding to 12346121537 its reverse (73512164321), we get a palindrome (85858285858).

The spelling of 12346121537 in words is "twelve billion, three hundred forty-six million, one hundred twenty-one thousand, five hundred thirty-seven".