2321110021 has 4 divisors (see below), whose sum is σ = 2422027872. Its totient is φ = 2220192172.

The previous prime is 2321110013. The next prime is 2321110063. The reversal of 2321110021 is 1200111232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2321110021 - 2³ = 2321110013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2321109983 and 2321110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321110621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50458891 + ... + 50458936.

It is an arithmetic number, because the mean of its divisors is an integer number (605506968).

Almost surely, 2^2321110021 is an apocalyptic number.

It is an amenable number.

2321110021 is a deficient number, since it is larger than the sum of its proper divisors (100917851).

2321110021 is a wasteful number, since it uses less digits than its factorization.

2321110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100917850.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2321110021 is about 48177.8997155335. The cubic root of 2321110021 is about 1324.0322865914.

Adding to 2321110021 its reverse (1200111232), we get a palindrome (3521221253).

The spelling of 2321110021 in words is "two billion, three hundred twenty-one million, one hundred ten thousand, twenty-one".