30223220021 has 4 divisors (see below), whose sum is σ = 30223644000. Its totient is φ = 30222796044.

The previous prime is 30223220009. The next prime is 30223220059. The reversal of 30223220021 is 12002232203.

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 a de Polignac number, because none of the positive numbers 2^k-30223220021 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 (30223220921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75971 + ... + 257328.

It is an arithmetic number, because the mean of its divisors is an integer number (7555911000).

Almost surely, 2^30223220021 is an apocalyptic number.

It is an amenable number.

30223220021 is a deficient number, since it is larger than the sum of its proper divisors (423979).

30223220021 is an equidigital number, since it uses as much as digits as its factorization.

30223220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423978.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 30223220021 its reverse (12002232203), we get a palindrome (42225452224).

The spelling of 30223220021 in words is "thirty billion, two hundred twenty-three million, two hundred twenty thousand, twenty-one".