4012123324205 has 16 divisors (see below), whose sum is σ = 5273541411120. Its totient is φ = 2916724134912.

The previous prime is 4012123324193. The next prime is 4012123324211. The reversal of 4012123324205 is 5024233212104.

It can be written as a sum of positive squares in 8 ways, for example, as 55640317924 + 3956483006281 = 235882^2 + 1989091^2 .

It is not a de Polignac number, because 4012123324205 - 2¹² = 4012123320109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813815654 + ... + 813820583.

It is an arithmetic number, because the mean of its divisors is an integer number (329596338195).

Almost surely, 2^{4012123324205} is an apocalyptic number.

It is an amenable number.

4012123324205 is a deficient number, since it is larger than the sum of its proper divisors (1261418086915).

4012123324205 is a wasteful number, since it uses less digits than its factorization.

4012123324205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627636288.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 4012123324205 its reverse (5024233212104), we get a palindrome (9036356536309).

The spelling of 4012123324205 in words is "four trillion, twelve billion, one hundred twenty-three million, three hundred twenty-four thousand, two hundred five".