30221101 has 2 divisors, whose sum is σ = 30221102. Its totient is φ = 30221100.

The previous prime is 30221099. The next prime is 30221117. The reversal of 30221101 is 10112203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 5171076 = 5005^2 + 2274^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221101 - 2¹ = 30221099 is a prime.

Together with 30221099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110550 + 15110551.

It is an arithmetic number, because the mean of its divisors is an integer number (15110551).

Almost surely, 2^30221101 is an apocalyptic number.

It is an amenable number.

30221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221101 is an equidigital number, since it uses as much as digits as its factorization.

30221101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 30221101 is about 5497.3721904197. The cubic root of 30221101 is about 311.4847298436.

Adding to 30221101 its reverse (10112203), we get a palindrome (40333304).

It can be divided in two parts, 3022110 and 1, that added together give a triangular number (3022111 = T₂₄₅₈).

The spelling of 30221101 in words is "thirty million, two hundred twenty-one thousand, one hundred one".