210112212173 has 2 divisors, whose sum is σ = 210112212174. Its totient is φ = 210112212172.

The previous prime is 210112212137. The next prime is 210112212203. The reversal of 210112212173 is 371212211012.

It is a happy number.

Together with previous prime (210112212137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177061699369 + 33050512804 = 420787^2 + 181798^2 .

It is a cyclic number.

It is not a de Polignac number, because 210112212173 - 2¹⁰ = 210112211149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210112211173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105056106086 + 105056106087.

It is an arithmetic number, because the mean of its divisors is an integer number (105056106087).

Almost surely, 2^210112212173 is an apocalyptic number.

It is an amenable number.

210112212173 is a deficient number, since it is larger than the sum of its proper divisors (1).

210112212173 is an equidigital number, since it uses as much as digits as its factorization.

210112212173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 210112212173 its reverse (371212211012), we get a palindrome (581324423185).

The spelling of 210112212173 in words is "two hundred ten billion, one hundred twelve million, two hundred twelve thousand, one hundred seventy-three".