30121212113221 has 8 divisors (see below), whose sum is σ = 30126848651424. Its totient is φ = 30115576123920.

The previous prime is 30121212113089. The next prime is 30121212113261. The reversal of 30121212113221 is 12231121212103.

It is a happy number.

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 30121212113221 - 2³⁵ = 30086852374853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30121212113192 and 30121212113201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121212113261) 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, 119113206 + ... + 119365816.

It is an arithmetic number, because the mean of its divisors is an integer number (3765856081428).

Almost surely, 2^{30121212113221} is an apocalyptic number.

It is an amenable number.

30121212113221 is a deficient number, since it is larger than the sum of its proper divisors (5636538203).

30121212113221 is a wasteful number, since it uses less digits than its factorization.

30121212113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274451.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 30121212113221 its reverse (12231121212103), we get a palindrome (42352333325324).

The spelling of 30121212113221 in words is "thirty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred thirteen thousand, two hundred twenty-one".