103105421405012 has 96 divisors (see below), whose sum is σ = 199987961468064. Its totient is φ = 46208699596800.

The previous prime is 103105421405009. The next prime is 103105421405017. The reversal of 103105421405012 is 210504124501301.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 58497502469956 + 44607918935056 = 7648366^2 + 6678916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103105421405017) 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, 962316308 + ... + 962423444.

It is an arithmetic number, because the mean of its divisors is an integer number (2083207931959).

Almost surely, 2^{103105421405012} is an apocalyptic number.

It is an amenable number.

103105421405012 is a deficient number, since it is larger than the sum of its proper divisors (96882540063052).

103105421405012 is a wasteful number, since it uses less digits than its factorization.

103105421405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109309 (or 109307 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 103105421405012 its reverse (210504124501301), we get a palindrome (313609545906313).

The spelling of 103105421405012 in words is "one hundred three trillion, one hundred five billion, four hundred twenty-one million, four hundred five thousand, twelve".