30211110222221 has 2 divisors, whose sum is σ = 30211110222222. Its totient is φ = 30211110222220.

The previous prime is 30211110222169. The next prime is 30211110222233. The reversal of 30211110222221 is 12222201111203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20054230458025 + 10156879764196 = 4478195^2 + 3186986^2 .

It is a cyclic number.

It is not a de Polignac number, because 30211110222221 - 2²² = 30211106027917 is a prime.

It is a super-2 number, since 2×30211110222221² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30211110222193 and 30211110222202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30211110222721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105555111110 + 15105555111111.

It is an arithmetic number, because the mean of its divisors is an integer number (15105555111111).

Almost surely, 2^{30211110222221} is an apocalyptic number.

It is an amenable number.

30211110222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211110222221 is an equidigital number, since it uses as much as digits as its factorization.

30211110222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 30211110222221 its reverse (12222201111203), we get a palindrome (42433311333424).

The spelling of 30211110222221 in words is "thirty trillion, two hundred eleven billion, one hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".