12155124413 has 2 divisors, whose sum is σ = 12155124414. Its totient is φ = 12155124412.

The previous prime is 12155124361. The next prime is 12155124439. The reversal of 12155124413 is 31442155121.

It is a happy number.

12155124413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7857404164 + 4297720249 = 88642^2 + 65557^2 .

It is a cyclic number.

It is not a de Polignac number, because 12155124413 - 2¹⁰ = 12155123389 is a prime.

It is a super-3 number, since 3×12155124413³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12155124013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077562206 + 6077562207.

It is an arithmetic number, because the mean of its divisors is an integer number (6077562207).

Almost surely, 2^12155124413 is an apocalyptic number.

It is an amenable number.

12155124413 is a deficient number, since it is larger than the sum of its proper divisors (1).

12155124413 is an equidigital number, since it uses as much as digits as its factorization.

12155124413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

Adding to 12155124413 its reverse (31442155121), we get a palindrome (43597279534).

The spelling of 12155124413 in words is "twelve billion, one hundred fifty-five million, one hundred twenty-four thousand, four hundred thirteen".