2221430423 has 4 divisors (see below), whose sum is σ = 2221544520. Its totient is φ = 2221316328.

The previous prime is 2221430371. The next prime is 2221430437. The reversal of 2221430423 is 3240341222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2221430423 - 2¹² = 2221426327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221430623) 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, 19688 + ... + 69501.

It is an arithmetic number, because the mean of its divisors is an integer number (555386130).

Almost surely, 2^2221430423 is an apocalyptic number.

2221430423 is a deficient number, since it is larger than the sum of its proper divisors (114097).

2221430423 is an equidigital number, since it uses as much as digits as its factorization.

2221430423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114096.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2221430423 is about 47132.0530318805. The cubic root of 2221430423 is about 1304.8008725202.

Adding to 2221430423 its reverse (3240341222), we get a palindrome (5461771645).

The spelling of 2221430423 in words is "two billion, two hundred twenty-one million, four hundred thirty thousand, four hundred twenty-three".