30220013021 has 4 divisors (see below), whose sum is σ = 32967286944. Its totient is φ = 27472739100.

The previous prime is 30220013009. The next prime is 30220013029. The reversal of 30220013021 is 12031002203.

It is a happy number.

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-30220013021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30220012987 and 30220013005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220013029) 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, 1373636945 + ... + 1373636966.

It is an arithmetic number, because the mean of its divisors is an integer number (8241821736).

Almost surely, 2^30220013021 is an apocalyptic number.

It is an amenable number.

30220013021 is a deficient number, since it is larger than the sum of its proper divisors (2747273923).

30220013021 is a wasteful number, since it uses less digits than its factorization.

30220013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747273922.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30220013021 its reverse (12031002203), we get a palindrome (42251015224).

The spelling of 30220013021 in words is "thirty billion, two hundred twenty million, thirteen thousand, twenty-one".