123012240124321 has 16 divisors (see below), whose sum is σ = 125172004883200. Its totient is φ = 120868232659200.

The previous prime is 123012240124307. The next prime is 123012240124327. The reversal of 123012240124321 is 123421042210321.

It is a cyclic number.

It is not a de Polignac number, because 123012240124321 - 2⁹ = 123012240123809 is a prime.

It is a super-2 number, since 2×123012240124321² (a number of 29 digits) contains 22 as substring.

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 123012240124321.

It is not an unprimeable number, because it can be changed into a prime (123012240124327) 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, 25563691 + ... + 29992111.

It is an arithmetic number, because the mean of its divisors is an integer number (7823250305200).

Almost surely, 2^{123012240124321} is an apocalyptic number.

It is an amenable number.

123012240124321 is a deficient number, since it is larger than the sum of its proper divisors (2159764758879).

123012240124321 is a wasteful number, since it uses less digits than its factorization.

123012240124321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430200.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 123012240124321 its reverse (123421042210321), we get a palindrome (246433282334642).

The spelling of 123012240124321 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty million, one hundred twenty-four thousand, three hundred twenty-one".