30310022202221 has 4 divisors (see below), whose sum is σ = 30622496658012. Its totient is φ = 29997547746432.

The previous prime is 30310022202209. The next prime is 30310022202319. The reversal of 30310022202221 is 12220222001303.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7647376321321 + 22662645880900 = 2765389^2 + 4760530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30310022202221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30310022202193 and 30310022202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30310022702221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156237227750 + ... + 156237227943.

It is an arithmetic number, because the mean of its divisors is an integer number (7655624164503).

Almost surely, 2^{30310022202221} is an apocalyptic number.

It is an amenable number.

30310022202221 is a deficient number, since it is larger than the sum of its proper divisors (312474455791).

30310022202221 is an equidigital number, since it uses as much as digits as its factorization.

30310022202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312474455790.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30310022202221 its reverse (12220222001303), we get a palindrome (42530244203524).

The spelling of 30310022202221 in words is "thirty trillion, three hundred ten billion, twenty-two million, two hundred two thousand, two hundred twenty-one".