30012121321 has 16 divisors (see below), whose sum is σ = 36944006400. Its totient is φ = 23741990208.

The previous prime is 30012121301. The next prime is 30012121339. The reversal of 30012121321 is 12312121003.

It is a cyclic number.

It is not a de Polignac number, because 30012121321 - 2⁷ = 30012121193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30012121295 and 30012121304.

It is not an unprimeable number, because it can be changed into a prime (30012121301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620895 + ... + 667483.

It is an arithmetic number, because the mean of its divisors is an integer number (2309000400).

Almost surely, 2^30012121321 is an apocalyptic number.

It is an amenable number.

30012121321 is a deficient number, since it is larger than the sum of its proper divisors (6931885079).

30012121321 is a wasteful number, since it uses less digits than its factorization.

30012121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53688.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30012121321 its reverse (12312121003), we get a palindrome (42324242324).

The spelling of 30012121321 in words is "thirty billion, twelve million, one hundred twenty-one thousand, three hundred twenty-one".