123201111000 has 384 divisors, whose sum is σ = 444770726400. Its totient is φ = 28293408000.

The previous prime is 123201110993. The next prime is 123201111001. The reversal of 123201111000 is 111102321.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201111001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6888069 + ... + 6905931.

It is an arithmetic number, because the mean of its divisors is an integer number (1158257100).

Almost surely, 2^123201111000 is an apocalyptic number.

123201111000 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 123201111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222385363200).

123201111000 is an abundant number, since it is smaller than the sum of its proper divisors (321569615400).

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

123201111000 is a wasteful number, since it uses less digits than its factorization.

123201111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17928 (or 17903 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 123201111000 its reverse (111102321), we get a palindrome (123312213321).

The spelling of 123201111000 in words is "one hundred twenty-three billion, two hundred one million, one hundred eleven thousand".