105123421225127 has 2 divisors, whose sum is σ = 105123421225128. Its totient is φ = 105123421225126.

The previous prime is 105123421225061. The next prime is 105123421225177. The reversal of 105123421225127 is 721522124321501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105123421225127 - 2¹⁰ = 105123421224103 is a prime.

It is a super-2 number, since 2×105123421225127² (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 (105123421225177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52561710612563 + 52561710612564.

It is an arithmetic number, because the mean of its divisors is an integer number (52561710612564).

Almost surely, 2^{105123421225127} is an apocalyptic number.

105123421225127 is a deficient number, since it is larger than the sum of its proper divisors (1).

105123421225127 is an equidigital number, since it uses as much as digits as its factorization.

105123421225127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 38.

Adding to 105123421225127 its reverse (721522124321501), we get a palindrome (826645545546628).

The spelling of 105123421225127 in words is "one hundred five trillion, one hundred twenty-three billion, four hundred twenty-one million, two hundred twenty-five thousand, one hundred twenty-seven".