12135853 has 2 divisors, whose sum is σ = 12135854. Its totient is φ = 12135852.

The previous prime is 12135821. The next prime is 12135859. The reversal of 12135853 is 35853121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10738729 + 1397124 = 3277^2 + 1182^2 .

It is an emirp because it is prime and its reverse (35853121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12135853 - 2⁵ = 12135821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12135859) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067926 + 6067927.

It is an arithmetic number, because the mean of its divisors is an integer number (6067927).

Almost surely, 2^12135853 is an apocalyptic number.

It is an amenable number.

12135853 is a deficient number, since it is larger than the sum of its proper divisors (1).

12135853 is an equidigital number, since it uses as much as digits as its factorization.

12135853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 12135853 is about 3483.6551207030. The cubic root of 12135853 is about 229.8035688961.

Adding to 12135853 its reverse (35853121), we get a palindrome (47988974).

The spelling of 12135853 in words is "twelve million, one hundred thirty-five thousand, eight hundred fifty-three".