30031201221 has 16 divisors (see below), whose sum is σ = 45764659200. Its totient is φ = 17159625648.

The previous prime is 30031201147. The next prime is 30031201229. The reversal of 30031201221 is 12210213003.

It is not a de Polignac number, because 30031201221 - 2¹⁰ = 30031200197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30031201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031201229) 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, 414160 + ... + 481238.

It is an arithmetic number, because the mean of its divisors is an integer number (2860291200).

Almost surely, 2^30031201221 is an apocalyptic number.

It is an amenable number.

30031201221 is a deficient number, since it is larger than the sum of its proper divisors (15733457979).

30031201221 is a wasteful number, since it uses less digits than its factorization.

30031201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88408.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30031201221 its reverse (12210213003), we get a palindrome (42241414224).

The spelling of 30031201221 in words is "thirty billion, thirty-one million, two hundred one thousand, two hundred twenty-one".