123223420320001 has 16 divisors (see below), whose sum is σ = 126205088763600. Its totient is φ = 120266262724608.

The previous prime is 123223420319917. The next prime is 123223420320043. The reversal of 123223420320001 is 100023024322321.

It can be written as a sum of positive squares in 8 ways, for example, as 20004830600976 + 103218589719025 = 4472676^2 + 10159655^2 .

It is a cyclic number.

It is not a de Polignac number, because 123223420320001 - 2³¹ = 123221272836353 is a prime.

It is a super-2 number, since 2×123223420320001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123223420320401) 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, 67265485 + ... + 69073093.

It is an arithmetic number, because the mean of its divisors is an integer number (7887818047725).

Almost surely, 2^{123223420320001} is an apocalyptic number.

It is an amenable number.

123223420320001 is a deficient number, since it is larger than the sum of its proper divisors (2981668443599).

123223420320001 is a wasteful number, since it uses less digits than its factorization.

123223420320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814388.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 123223420320001 its reverse (100023024322321), we get a palindrome (223246444642322).

The spelling of 123223420320001 in words is "one hundred twenty-three trillion, two hundred twenty-three billion, four hundred twenty million, three hundred twenty thousand, one".