30221201173 has 2 divisors, whose sum is σ = 30221201174. Its totient is φ = 30221201172.

The previous prime is 30221201149. The next prime is 30221201201. The reversal of 30221201173 is 37110212203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20811813169 + 9409388004 = 144263^2 + 97002^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221201173 - 2³³ = 21631266581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221201273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110600586 + 15110600587.

It is an arithmetic number, because the mean of its divisors is an integer number (15110600587).

Almost surely, 2^30221201173 is an apocalyptic number.

It is an amenable number.

30221201173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221201173 is an equidigital number, since it uses as much as digits as its factorization.

30221201173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 30221201173 its reverse (37110212203), we get a palindrome (67331413376).

The spelling of 30221201173 in words is "thirty billion, two hundred twenty-one million, two hundred one thousand, one hundred seventy-three".