30020021224 has 8 divisors (see below), whose sum is σ = 56287539810. Its totient is φ = 15010010608.

The previous prime is 30020021189. The next prime is 30020021231. The reversal of 30020021224 is 42212002003.

It can be written as a sum of positive squares in only one way, i.e., 25024076100 + 4995945124 = 158190^2 + 70682^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 30020021198 and 30020021207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1876251319 + ... + 1876251334.

Almost surely, 2^30020021224 is an apocalyptic number.

It is an amenable number.

30020021224 is a deficient number, since it is larger than the sum of its proper divisors (26267518586).

30020021224 is a wasteful number, since it uses less digits than its factorization.

30020021224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752502659 (or 3752502655 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 30020021224 its reverse (42212002003), we get a palindrome (72232023227).

The spelling of 30020021224 in words is "thirty billion, twenty million, twenty-one thousand, two hundred twenty-four".