210030323202181 has 2 divisors, whose sum is σ = 210030323202182. Its totient is φ = 210030323202180.

The previous prime is 210030323202127. The next prime is 210030323202191. The reversal of 210030323202181 is 181202323030012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206111245730625 + 3919077471556 = 14356575^2 + 1979666^2 .

It is a cyclic number.

It is not a de Polignac number, because 210030323202181 - 2⁷ = 210030323202053 is a prime.

It is a super-2 number, since 2×210030323202181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210030323202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105015161601090 + 105015161601091.

It is an arithmetic number, because the mean of its divisors is an integer number (105015161601091).

Almost surely, 2^{210030323202181} is an apocalyptic number.

It is an amenable number.

210030323202181 is a deficient number, since it is larger than the sum of its proper divisors (1).

210030323202181 is an equidigital number, since it uses as much as digits as its factorization.

210030323202181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 210030323202181 its reverse (181202323030012), we get a palindrome (391232646232193).

The spelling of 210030323202181 in words is "two hundred ten trillion, thirty billion, three hundred twenty-three million, two hundred two thousand, one hundred eighty-one".