2110021321 has 4 divisors (see below), whose sum is σ = 2113879312. Its totient is φ = 2106163332.

The previous prime is 2110021313. The next prime is 2110021327. The reversal of 2110021321 is 1231200112.

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 2110021321 - 2³ = 2110021313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2110021327) 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, 1928175 + ... + 1929268.

It is an arithmetic number, because the mean of its divisors is an integer number (528469828).

Almost surely, 2^2110021321 is an apocalyptic number.

It is an amenable number.

2110021321 is a deficient number, since it is larger than the sum of its proper divisors (3857991).

2110021321 is an equidigital number, since it uses as much as digits as its factorization.

2110021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857990.

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

The square root of 2110021321 is about 45934.9683901056. The cubic root of 2110021321 is about 1282.6129325118.

Adding to 2110021321 its reverse (1231200112), we get a palindrome (3341221433).

The spelling of 2110021321 in words is "two billion, one hundred ten million, twenty-one thousand, three hundred twenty-one".