120331311012 has 72 divisors (see below), whose sum is σ = 332361181152. Its totient is φ = 36404860800.

The previous prime is 120331310999. The next prime is 120331311031. The reversal of 120331311012 is 210113133021.

120331311012 is a `hidden beast` number, since 1 + 20 + 331 + 311 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1914 + ... + 490577.

It is an arithmetic number, because the mean of its divisors is an integer number (4616127516).

Almost surely, 2^120331311012 is an apocalyptic number.

120331311012 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 120331311012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166180590576).

120331311012 is an abundant number, since it is smaller than the sum of its proper divisors (212029870140).

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

120331311012 is a wasteful number, since it uses less digits than its factorization.

120331311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493129 (or 493124 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 120331311012 its reverse (210113133021), we get a palindrome (330444444033).

The spelling of 120331311012 in words is "one hundred twenty billion, three hundred thirty-one million, three hundred eleven thousand, twelve".