123201110112 has 96 divisors (see below), whose sum is σ = 327955068000. Its totient is φ = 40493027328.

The previous prime is 123201110111. The next prime is 123201110119. The reversal of 123201110112 is 211011102321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 123201110091 and 123201110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201110111) 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, 1928214 + ... + 1991082.

It is an arithmetic number, because the mean of its divisors is an integer number (3416198625).

Almost surely, 2^123201110112 is an apocalyptic number.

123201110112 is a gapful number since it is divisible by the number (12) 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 123201110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163977534000).

123201110112 is an abundant number, since it is smaller than the sum of its proper divisors (204753957888).

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

123201110112 is a wasteful number, since it uses less digits than its factorization.

123201110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63168 (or 63160 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 123201110112 its reverse (211011102321), we get a palindrome (334212212433).

The spelling of 123201110112 in words is "one hundred twenty-three billion, two hundred one million, one hundred ten thousand, one hundred twelve".