123220123000 has 128 divisors (see below), whose sum is σ = 310749304320. Its totient is φ = 45462297600.

The previous prime is 123220122983. The next prime is 123220123001. The reversal of 123220123000 is 321022321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220123001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22786297 + ... + 22791703.

It is an arithmetic number, because the mean of its divisors is an integer number (2427728940).

Almost surely, 2^123220123000 is an apocalyptic number.

123220123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123220123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155374652160).

123220123000 is an abundant number, since it is smaller than the sum of its proper divisors (187529181320).

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

123220123000 is a wasteful number, since it uses less digits than its factorization.

123220123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194 (or 7180 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 123220123000 its reverse (321022321), we get a palindrome (123541145321).

The spelling of 123220123000 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred twenty-three thousand".