12138100511 has 2 divisors, whose sum is σ = 12138100512. Its totient is φ = 12138100510.

The previous prime is 12138100483. The next prime is 12138100567. The reversal of 12138100511 is 11500183121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12138100511 - 2¹⁸ = 12137838367 is a prime.

It is a super-2 number, since 2×12138100511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12138100591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6069050255 + 6069050256.

It is an arithmetic number, because the mean of its divisors is an integer number (6069050256).

Almost surely, 2^12138100511 is an apocalyptic number.

12138100511 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138100511 is an equidigital number, since it uses as much as digits as its factorization.

12138100511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 12138100511 its reverse (11500183121), we get a palindrome (23638283632).

The spelling of 12138100511 in words is "twelve billion, one hundred thirty-eight million, one hundred thousand, five hundred eleven".