120311321020 has 48 divisors (see below), whose sum is σ = 275654752128. Its totient is φ = 43744420160.

The previous prime is 120311320973. The next prime is 120311321063. The reversal of 120311321020 is 20123113021.

It is a junction number, because it is equal to n+sod(n) for n = 120311320985 and 120311321003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2187579 + ... + 2241901.

It is an arithmetic number, because the mean of its divisors is an integer number (5742807336).

Almost surely, 2^120311321020 is an apocalyptic number.

120311321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120311321020 is an abundant number, since it is smaller than the sum of its proper divisors (155343431108).

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

120311321020 is a wasteful number, since it uses less digits than its factorization.

120311321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64410 (or 64408 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 120311321020 its reverse (20123113021), we get a palindrome (140434434041).

The spelling of 120311321020 in words is "one hundred twenty billion, three hundred eleven million, three hundred twenty-one thousand, twenty".