30212132173 has 2 divisors, whose sum is σ = 30212132174. Its totient is φ = 30212132172.

The previous prime is 30212132081. The next prime is 30212132221. The reversal of 30212132173 is 37123121203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22140547209 + 8071584964 = 148797^2 + 89842^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212132173 - 2¹⁷ = 30212001101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30212130173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106066086 + 15106066087.

It is an arithmetic number, because the mean of its divisors is an integer number (15106066087).

Almost surely, 2^30212132173 is an apocalyptic number.

It is an amenable number.

30212132173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30212132173 is an equidigital number, since it uses as much as digits as its factorization.

30212132173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 30212132173 its reverse (37123121203), we get a palindrome (67335253376).

The spelling of 30212132173 in words is "thirty billion, two hundred twelve million, one hundred thirty-two thousand, one hundred seventy-three".