30210321320021 has 8 divisors (see below), whose sum is σ = 30853244596224. Its totient is φ = 29567404314000.

The previous prime is 30210321320009. The next prime is 30210321320071. The reversal of 30210321320021 is 12002312301203.

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

It is a cyclic number.

It is not a de Polignac number, because 30210321320021 - 2³⁸ = 29935443413077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30210321319975 and 30210321320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30210321320071) 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, 8908271 + ... + 11822771.

It is an arithmetic number, because the mean of its divisors is an integer number (3856655574528).

Almost surely, 2^{30210321320021} is an apocalyptic number.

It is an amenable number.

30210321320021 is a deficient number, since it is larger than the sum of its proper divisors (642923276203).

30210321320021 is a wasteful number, since it uses less digits than its factorization.

30210321320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135091.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30210321320021 its reverse (12002312301203), we get a palindrome (42212633621224).

The spelling of 30210321320021 in words is "thirty trillion, two hundred ten billion, three hundred twenty-one million, three hundred twenty thousand, twenty-one".