30423420221 has 4 divisors (see below), whose sum is σ = 30424405632. Its totient is φ = 30422434812.

The previous prime is 30423420197. The next prime is 30423420263. The reversal of 30423420221 is 12202432403.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12202432403 = 7 ⋅1743204629.

It is a cyclic number.

It is not a de Polignac number, because 30423420221 - 2¹⁴ = 30423403837 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 (30423420121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444845 + ... + 508658.

It is an arithmetic number, because the mean of its divisors is an integer number (7606101408).

Almost surely, 2^30423420221 is an apocalyptic number.

It is an amenable number.

30423420221 is a deficient number, since it is larger than the sum of its proper divisors (985411).

30423420221 is an equidigital number, since it uses as much as digits as its factorization.

30423420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985410.

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

Adding to 30423420221 its reverse (12202432403), we get a palindrome (42625852624).

The spelling of 30423420221 in words is "thirty billion, four hundred twenty-three million, four hundred twenty thousand, two hundred twenty-one".