2001321120 has 96 divisors (see below), whose sum is σ = 6474601728. Its totient is φ = 519257088.

The previous prime is 2001321109. The next prime is 2001321137. The reversal of 2001321120 is 211231002.

2001321120 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2001321096 and 2001321105.

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, 38584 + ... + 74103.

It is an arithmetic number, because the mean of its divisors is an integer number (67443768).

Almost surely, 2^2001321120 is an apocalyptic number.

2001321120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001321120 is an abundant number, since it is smaller than the sum of its proper divisors (4473280608).

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

2001321120 is a wasteful number, since it uses less digits than its factorization.

2001321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112742 (or 112734 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2001321120 is about 44736.1276822212. The cubic root of 2001321120 is about 1260.1984066498.

Adding to 2001321120 its reverse (211231002), we get a palindrome (2212552122).

The spelling of 2001321120 in words is "two billion, one million, three hundred twenty-one thousand, one hundred twenty".