2321120021 has 8 divisors (see below), whose sum is σ = 2532479904. Its totient is φ = 2109818320.

The previous prime is 2321120017. The next prime is 2321120023. The reversal of 2321120021 is 1200211232.

It is a happy number.

2321120021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2321120021 - 2² = 2321120017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2321119978 and 2321120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321120023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145391 + ... + 160563.

It is an arithmetic number, because the mean of its divisors is an integer number (316559988).

Almost surely, 2^2321120021 is an apocalyptic number.

It is an amenable number.

2321120021 is a deficient number, since it is larger than the sum of its proper divisors (211359883).

2321120021 is a wasteful number, since it uses less digits than its factorization.

2321120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29091.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2321120021 is about 48178.0034974468. The cubic root of 2321120021 is about 1324.0341880241.

Adding to 2321120021 its reverse (1200211232), we get a palindrome (3521331253).

The spelling of 2321120021 in words is "two billion, three hundred twenty-one million, one hundred twenty thousand, twenty-one".