30212321021 has 8 divisors (see below), whose sum is σ = 31805746080. Its totient is φ = 28619226288.

The previous prime is 30212320993. The next prime is 30212321023. The reversal of 30212321021 is 12012321203.

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 30212321021 - 2¹⁰ = 30212319997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212321023) 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, 117635 + ... + 272511.

It is an arithmetic number, because the mean of its divisors is an integer number (3975718260).

Almost surely, 2^30212321021 is an apocalyptic number.

It is an amenable number.

30212321021 is a deficient number, since it is larger than the sum of its proper divisors (1593425059).

30212321021 is a wasteful number, since it uses less digits than its factorization.

30212321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165163.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30212321021 its reverse (12012321203), we get a palindrome (42224642224).

The spelling of 30212321021 in words is "thirty billion, two hundred twelve million, three hundred twenty-one thousand, twenty-one".