30221133101221 has 2 divisors, whose sum is σ = 30221133101222. Its totient is φ = 30221133101220.

The previous prime is 30221133101207. The next prime is 30221133101231. The reversal of 30221133101221 is 12210133112203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27059617956996 + 3161515144225 = 5201886^2 + 1778065^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221133101221 - 2¹⁹ = 30221132576933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30221133101192 and 30221133101201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221133101231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110566550610 + 15110566550611.

It is an arithmetic number, because the mean of its divisors is an integer number (15110566550611).

Almost surely, 2^{30221133101221} is an apocalyptic number.

It is an amenable number.

30221133101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221133101221 is an equidigital number, since it uses as much as digits as its factorization.

30221133101221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 30221133101221 its reverse (12210133112203), we get a palindrome (42431266213424).

The spelling of 30221133101221 in words is "thirty trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred one thousand, two hundred twenty-one".