30223230021 has 12 divisors (see below), whose sum is σ = 43717359660. Its totient is φ = 20120397120.

The previous prime is 30223229963. The next prime is 30223230031. The reversal of 30223230021 is 12003232203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16525102500 + 13698127521 = 128550^2 + 117039^2 .

It is not a de Polignac number, because 30223230021 - 2¹¹ = 30223227973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30223229976 and 30223230003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30223230031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2361840 + ... + 2374601.

It is an arithmetic number, because the mean of its divisors is an integer number (3643113305).

Almost surely, 2^30223230021 is an apocalyptic number.

It is an amenable number.

30223230021 is a deficient number, since it is larger than the sum of its proper divisors (13494129639).

30223230021 is a wasteful number, since it uses less digits than its factorization.

30223230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737156 (or 4737153 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30223230021 its reverse (12003232203), we get a palindrome (42226462224).

The spelling of 30223230021 in words is "thirty billion, two hundred twenty-three million, two hundred thirty thousand, twenty-one".