123444321001 has 16 divisors (see below), whose sum is σ = 128662110720. Its totient is φ = 118304547840.

The previous prime is 123444320983. The next prime is 123444321029. The reversal of 123444321001 is 100123444321.

It is a cyclic number.

It is not a de Polignac number, because 123444321001 - 2¹³ = 123444312809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123444321031) 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, 14222275 + ... + 14230951.

It is an arithmetic number, because the mean of its divisors is an integer number (8041381920).

Almost surely, 2^123444321001 is an apocalyptic number.

It is an amenable number.

123444321001 is a deficient number, since it is larger than the sum of its proper divisors (5217789719).

123444321001 is a wasteful number, since it uses less digits than its factorization.

123444321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13104.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123444321001 its reverse (100123444321), we get a palindrome (223567765322).

The spelling of 123444321001 in words is "one hundred twenty-three billion, four hundred forty-four million, three hundred twenty-one thousand, one".