30303020021 has 8 divisors (see below), whose sum is σ = 30374634240. Its totient is φ = 30231478368.

The previous prime is 30303020003. The next prime is 30303020063. The reversal of 30303020021 is 12002030303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30303020021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30303019978 and 30303020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30303029021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868505 + ... + 902721.

It is an arithmetic number, because the mean of its divisors is an integer number (3796829280).

Almost surely, 2^30303020021 is an apocalyptic number.

It is an amenable number.

30303020021 is a deficient number, since it is larger than the sum of its proper divisors (71614219).

30303020021 is a wasteful number, since it uses less digits than its factorization.

30303020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36283.

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 30303020021 its reverse (12002030303), we get a palindrome (42305050324).

The spelling of 30303020021 in words is "thirty billion, three hundred three million, twenty thousand, twenty-one".