30221322123 has 4 divisors (see below), whose sum is σ = 40295096168. Its totient is φ = 20147548080.

The previous prime is 30221322071. The next prime is 30221322137. The reversal of 30221322123 is 32122312203.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30221322123 - 2¹⁰ = 30221321099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30221322123.

It is not an unprimeable number, because it can be changed into a prime (30221322163) 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 3 ways as a sum of consecutive naturals, for example, 5036887018 + ... + 5036887023.

It is an arithmetic number, because the mean of its divisors is an integer number (10073774042).

Almost surely, 2^30221322123 is an apocalyptic number.

30221322123 is a deficient number, since it is larger than the sum of its proper divisors (10073774045).

30221322123 is a wasteful number, since it uses less digits than its factorization.

30221322123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10073774044.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30221322123 its reverse (32122312203), we get a palindrome (62343634326).

The spelling of 30221322123 in words is "thirty billion, two hundred twenty-one million, three hundred twenty-two thousand, one hundred twenty-three".