123195111120 has 240 divisors, whose sum is σ = 432159661440. Its totient is φ = 31410699264.

The previous prime is 123195111077. The next prime is 123195111121. The reversal of 123195111120 is 21111591321.

It is a happy number.

123195111120 is a `hidden beast` number, since 1 + 2 + 31 + 9 + 511 + 112 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123195111121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2121999 + ... + 2179281.

It is an arithmetic number, because the mean of its divisors is an integer number (1800665256).

Almost surely, 2^123195111120 is an apocalyptic number.

123195111120 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 123195111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216079830720).

123195111120 is an abundant number, since it is smaller than the sum of its proper divisors (308964550320).

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

123195111120 is a wasteful number, since it uses less digits than its factorization.

123195111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57434 (or 57425 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 27.

The spelling of 123195111120 in words is "one hundred twenty-three billion, one hundred ninety-five million, one hundred eleven thousand, one hundred twenty".