30121202321 has 8 divisors (see below), whose sum is σ = 35611273920. Its totient is φ = 24927891408.

The previous prime is 30121202299. The next prime is 30121202329. The reversal of 30121202321 is 12320212103.

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

It is not a de Polignac number, because 30121202321 - 2¹⁸ = 30120940177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30121202321.

It is not an unprimeable number, because it can be changed into a prime (30121202329) 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, 74189951 + ... + 74190356.

It is an arithmetic number, because the mean of its divisors is an integer number (4451409240).

Almost surely, 2^30121202321 is an apocalyptic number.

It is an amenable number.

30121202321 is a deficient number, since it is larger than the sum of its proper divisors (5490071599).

30121202321 is a wasteful number, since it uses less digits than its factorization.

30121202321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148380343.

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

Adding to 30121202321 its reverse (12320212103), we get a palindrome (42441414424).

The spelling of 30121202321 in words is "thirty billion, one hundred twenty-one million, two hundred two thousand, three hundred twenty-one".