30020001321 has 4 divisors (see below), whose sum is σ = 40026668432. Its totient is φ = 20013334212.

The previous prime is 30020001317. The next prime is 30020001353. The reversal of 30020001321 is 12310002003.

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 not a de Polignac number, because 30020001321 - 2² = 30020001317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30020001297 and 30020001306.

It is not an unprimeable number, because it can be changed into a prime (30020001421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5003333551 + ... + 5003333556.

It is an arithmetic number, because the mean of its divisors is an integer number (10006667108).

Almost surely, 2^30020001321 is an apocalyptic number.

It is an amenable number.

30020001321 is a deficient number, since it is larger than the sum of its proper divisors (10006667111).

30020001321 is a wasteful number, since it uses less digits than its factorization.

30020001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006667110.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30020001321 its reverse (12310002003), we get a palindrome (42330003324).

The spelling of 30020001321 in words is "thirty billion, twenty million, one thousand, three hundred twenty-one".