30302031221 has 8 divisors (see below), whose sum is σ = 37779155904. Its totient is φ = 23611972320.

The previous prime is 30302031173. The next prime is 30302031301. The reversal of 30302031221 is 12213020303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30302031221 is a prime.

It is a super-2 number, since 2×30302031221² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30302031221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30302031521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196766360 + ... + 196766513.

It is an arithmetic number, because the mean of its divisors is an integer number (4722394488).

Almost surely, 2^30302031221 is an apocalyptic number.

It is an amenable number.

30302031221 is a deficient number, since it is larger than the sum of its proper divisors (7477124683).

30302031221 is a wasteful number, since it uses less digits than its factorization.

30302031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393532891.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30302031221 its reverse (12213020303), we get a palindrome (42515051524).

The spelling of 30302031221 in words is "thirty billion, three hundred two million, thirty-one thousand, two hundred twenty-one".