105123224101245 has 32 divisors (see below), whose sum is σ = 192226150674432. Its totient is φ = 48056124366912.

The previous prime is 105123224101241. The next prime is 105123224101297. The reversal of 105123224101245 is 542101422321501.

It is not a de Polignac number, because 105123224101245 - 2² = 105123224101241 is a prime.

It is a super-2 number, since 2×105123224101245² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105123224101241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23872444 + ... + 27930986.

It is an arithmetic number, because the mean of its divisors is an integer number (6007067208576).

Almost surely, 2^{105123224101245} is an apocalyptic number.

105123224101245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105123224101245 is a deficient number, since it is larger than the sum of its proper divisors (87102926573187).

105123224101245 is a wasteful number, since it uses less digits than its factorization.

105123224101245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4305241.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 105123224101245 its reverse (542101422321501), we get a palindrome (647224646422746).

The spelling of 105123224101245 in words is "one hundred five trillion, one hundred twenty-three billion, two hundred twenty-four million, one hundred one thousand, two hundred forty-five".