210100112021161 has 2 divisors, whose sum is σ = 210100112021162. Its totient is φ = 210100112021160.

The previous prime is 210100112021123. The next prime is 210100112021171. The reversal of 210100112021161 is 161120211001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126179030907136 + 83921081114025 = 11232944^2 + 9160845^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100112021161 - 2⁹ = 210100112020649 is a prime.

It is not a weakly prime, because it can be changed into another prime (210100112021171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050056010580 + 105050056010581.

It is an arithmetic number, because the mean of its divisors is an integer number (105050056010581).

Almost surely, 2^{210100112021161} is an apocalyptic number.

It is an amenable number.

210100112021161 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100112021161 is an equidigital number, since it uses as much as digits as its factorization.

210100112021161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 210100112021161 its reverse (161120211001012), we get a palindrome (371220323022173).

The spelling of 210100112021161 in words is "two hundred ten trillion, one hundred billion, one hundred twelve million, twenty-one thousand, one hundred sixty-one".