210012030181 has 2 divisors, whose sum is σ = 210012030182. Its totient is φ = 210012030180.

The previous prime is 210012030091. The next prime is 210012030253. The reversal of 210012030181 is 181030210012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187584272100 + 22427758081 = 433110^2 + 149759^2 .

It is a cyclic number.

It is not a de Polignac number, because 210012030181 - 2¹¹ = 210012028133 is a prime.

It is a super-2 number, since 2×210012030181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210012030881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006015090 + 105006015091.

It is an arithmetic number, because the mean of its divisors is an integer number (105006015091).

Almost surely, 2^210012030181 is an apocalyptic number.

It is an amenable number.

210012030181 is a deficient number, since it is larger than the sum of its proper divisors (1).

210012030181 is an equidigital number, since it uses as much as digits as its factorization.

210012030181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 210012030181 its reverse (181030210012), we get a palindrome (391042240193).

The spelling of 210012030181 in words is "two hundred ten billion, twelve million, thirty thousand, one hundred eighty-one".