123123044213213 has 16 divisors (see below), whose sum is σ = 138082272583680. Its totient is φ = 108823062822000.

The previous prime is 123123044213207. The next prime is 123123044213219. The reversal of 123123044213213 is 312312440321321.

It is an interprime number because it is at equal distance from previous prime (123123044213207) and next prime (123123044213219).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123123044213213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123123044213213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123044213219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788494853 + ... + 788650986.

It is an arithmetic number, because the mean of its divisors is an integer number (8630142036480).

Almost surely, 2^{123123044213213} is an apocalyptic number.

It is an amenable number.

123123044213213 is a deficient number, since it is larger than the sum of its proper divisors (14959228370467).

123123044213213 is a wasteful number, since it uses less digits than its factorization.

123123044213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577146048.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 123123044213213 its reverse (312312440321321), we get a palindrome (435435484534534).

The spelling of 123123044213213 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, forty-four million, two hundred thirteen thousand, two hundred thirteen".