30121213321 has 4 divisors (see below), whose sum is σ = 30174715152. Its totient is φ = 30067711492.

The previous prime is 30121213267. The next prime is 30121213337. The reversal of 30121213321 is 12331212103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30121213321 - 2⁹ = 30121212809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121213351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26750071 + ... + 26751196.

It is an arithmetic number, because the mean of its divisors is an integer number (7543678788).

Almost surely, 2^30121213321 is an apocalyptic number.

It is an amenable number.

30121213321 is a deficient number, since it is larger than the sum of its proper divisors (53501831).

30121213321 is an equidigital number, since it uses as much as digits as its factorization.

30121213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53501830.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30121213321 its reverse (12331212103), we get a palindrome (42452425424).

The spelling of 30121213321 in words is "thirty billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred twenty-one".