123221023000 has 128 divisors (see below), whose sum is σ = 304679232000. Its totient is φ = 46514851200.

The previous prime is 123221022983. The next prime is 123221023027. The reversal of 123221023000 is 320122321.

It is a super-3 number, since 3×123221023000³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4984671 + ... + 5009329.

It is an arithmetic number, because the mean of its divisors is an integer number (2380306500).

Almost surely, 2^123221023000 is an apocalyptic number.

123221023000 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 123221023000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152339616000).

123221023000 is an abundant number, since it is smaller than the sum of its proper divisors (181458209000).

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

123221023000 is a wasteful number, since it uses less digits than its factorization.

123221023000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24962 (or 24948 counting only the distinct ones).

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

Adding to 123221023000 its reverse (320122321), we get a palindrome (123541145321).

The spelling of 123221023000 in words is "one hundred twenty-three billion, two hundred twenty-one million, twenty-three thousand".