30221231130173 has 2 divisors, whose sum is σ = 30221231130174. Its totient is φ = 30221231130172.

The previous prime is 30221231130113. The next prime is 30221231130193. The reversal of 30221231130173 is 37103113212203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27478752712324 + 2742478417849 = 5242018^2 + 1656043^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221231130173 - 2¹⁸ = 30221230868029 is a prime.

It is a super-2 number, since 2×30221231130173² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221231130113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110615565086 + 15110615565087.

It is an arithmetic number, because the mean of its divisors is an integer number (15110615565087).

Almost surely, 2^{30221231130173} is an apocalyptic number.

It is an amenable number.

30221231130173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221231130173 is an equidigital number, since it uses as much as digits as its factorization.

30221231130173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 30221231130173 its reverse (37103113212203), we get a palindrome (67324344342376).

The spelling of 30221231130173 in words is "thirty trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred thirty thousand, one hundred seventy-three".