138212571127 has 2 divisors, whose sum is σ = 138212571128. Its totient is φ = 138212571126.

The previous prime is 138212571103. The next prime is 138212571137. The reversal of 138212571127 is 721175212831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138212571127 - 2¹⁹ = 138212046839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138212571127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138212571137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69106285563 + 69106285564.

It is an arithmetic number, because the mean of its divisors is an integer number (69106285564).

Almost surely, 2^138212571127 is an apocalyptic number.

138212571127 is a deficient number, since it is larger than the sum of its proper divisors (1).

138212571127 is an equidigital number, since it uses as much as digits as its factorization.

138212571127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 40.

Adding to 138212571127 its reverse (721175212831), we get a palindrome (859387783958).

The spelling of 138212571127 in words is "one hundred thirty-eight billion, two hundred twelve million, five hundred seventy-one thousand, one hundred twenty-seven".