138122111022031 has 2 divisors, whose sum is σ = 138122111022032. Its totient is φ = 138122111022030.

The previous prime is 138122111021893. The next prime is 138122111022149. The reversal of 138122111022031 is 130220111221831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138122111022031 - 2⁹ = 138122111021519 is a prime.

It is a super-2 number, since 2×138122111022031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138122111622031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69061055511015 + 69061055511016.

It is an arithmetic number, because the mean of its divisors is an integer number (69061055511016).

Almost surely, 2^{138122111022031} is an apocalyptic number.

138122111022031 is a deficient number, since it is larger than the sum of its proper divisors (1).

138122111022031 is an equidigital number, since it uses as much as digits as its factorization.

138122111022031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 138122111022031 its reverse (130220111221831), we get a palindrome (268342222243862).

The spelling of 138122111022031 in words is "one hundred thirty-eight trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, thirty-one".