30121331321 has 8 divisors (see below), whose sum is σ = 30596686464. Its totient is φ = 29647671840.

The previous prime is 30121331309. The next prime is 30121331327. The reversal of 30121331321 is 12313312103.

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 30121331321 - 2¹⁰ = 30121330297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30121331293 and 30121331302.

It is not an unprimeable number, because it can be changed into a prime (30121331327) 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, 388085 + ... + 459186.

It is an arithmetic number, because the mean of its divisors is an integer number (3824585808).

Almost surely, 2^30121331321 is an apocalyptic number.

It is an amenable number.

30121331321 is a deficient number, since it is larger than the sum of its proper divisors (475355143).

30121331321 is an equidigital number, since it uses as much as digits as its factorization.

30121331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847831.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30121331321 its reverse (12313312103), we get a palindrome (42434643424).

The spelling of 30121331321 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-one".