123221400104 has 32 divisors (see below), whose sum is σ = 252207397440. Its totient is φ = 55973366400.

The previous prime is 123221400091. The next prime is 123221400109. The reversal of 123221400104 is 401004122321.

It is not an unprimeable number, because it can be changed into a prime (123221400109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317957 + ... + 589524.

It is an arithmetic number, because the mean of its divisors is an integer number (7881481170).

Almost surely, 2^123221400104 is an apocalyptic number.

It is an amenable number.

123221400104 is an abundant number, since it is smaller than the sum of its proper divisors (128985997336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123221400104 is a wasteful number, since it uses less digits than its factorization.

123221400104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909041 (or 909037 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123221400104 its reverse (401004122321), we get a palindrome (524225522425).

It can be divided in two parts, 123221 and 400104, that added together give a palindrome (523325).

The spelling of 123221400104 in words is "one hundred twenty-three billion, two hundred twenty-one million, four hundred thousand, one hundred four".