121030113221 has 16 divisors (see below), whose sum is σ = 131446459200. Its totient is φ = 111058646400.

The previous prime is 121030113203. The next prime is 121030113241. The reversal of 121030113221 is 122311030121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121030113221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121030113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030113241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450590 + ... + 667151.

It is an arithmetic number, because the mean of its divisors is an integer number (8215403700).

Almost surely, 2^121030113221 is an apocalyptic number.

It is an amenable number.

121030113221 is a deficient number, since it is larger than the sum of its proper divisors (10416345979).

121030113221 is a wasteful number, since it uses less digits than its factorization.

121030113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117940.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121030113221 its reverse (122311030121), we get a palindrome (243341143342).

The spelling of 121030113221 in words is "one hundred twenty-one billion, thirty million, one hundred thirteen thousand, two hundred twenty-one".