120204331128 has 80 divisors (see below), whose sum is σ = 384781074480. Its totient is φ = 34344093312.

The previous prime is 120204331127. The next prime is 120204331133. The reversal of 120204331128 is 821133402021.

120204331128 is a `hidden beast` number, since 1 + 2 + 0 + 204 + 331 + 128 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120204331127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13245501 + ... + 13254572.

It is an arithmetic number, because the mean of its divisors is an integer number (4809763431).

Almost surely, 2^120204331128 is an apocalyptic number.

120204331128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

120204331128 is an abundant number, since it is smaller than the sum of its proper divisors (264576743352).

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

120204331128 is a wasteful number, since it uses less digits than its factorization.

120204331128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26500098 (or 26500085 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 120204331128 its reverse (821133402021), we get a palindrome (941337733149).

The spelling of 120204331128 in words is "one hundred twenty billion, two hundred four million, three hundred thirty-one thousand, one hundred twenty-eight".