12938111 has 2 divisors, whose sum is σ = 12938112. Its totient is φ = 12938110.

The previous prime is 12938099. The next prime is 12938131. The reversal of 12938111 is 11183921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12938111 - 2⁶ = 12938047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12938131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469055 + 6469056.

It is an arithmetic number, because the mean of its divisors is an integer number (6469056).

Almost surely, 2^12938111 is an apocalyptic number.

12938111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12938111 is an equidigital number, since it uses as much as digits as its factorization.

12938111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 26.

The square root of 12938111 is about 3596.9585763531. The cubic root of 12938111 is about 234.7597423790.

The spelling of 12938111 in words is "twelve million, nine hundred thirty-eight thousand, one hundred eleven".