2221330421 has 8 divisors (see below), whose sum is σ = 2274063264. Its totient is φ = 2168646480.

The previous prime is 2221330399. The next prime is 2221330427. The reversal of 2221330421 is 1240331222.

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 2221330421 - 2²⁶ = 2154221557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2221330393 and 2221330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221330427) 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, 89630 + ... + 111696.

It is an arithmetic number, because the mean of its divisors is an integer number (284257908).

Almost surely, 2^2221330421 is an apocalyptic number.

It is an amenable number.

2221330421 is a deficient number, since it is larger than the sum of its proper divisors (52732843).

2221330421 is a wasteful number, since it uses less digits than its factorization.

2221330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24451.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2221330421 is about 47130.9921495400. The cubic root of 2221330421 is about 1304.7812928456.

Adding to 2221330421 its reverse (1240331222), we get a palindrome (3461661643).

The spelling of 2221330421 in words is "two billion, two hundred twenty-one million, three hundred thirty thousand, four hundred twenty-one".