210101212002161 has 2 divisors, whose sum is σ = 210101212002162. Its totient is φ = 210101212002160.

The previous prime is 210101212002137. The next prime is 210101212002211. The reversal of 210101212002161 is 161200212101012.

210101212002161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210074412675136 + 26799327025 = 14493944^2 + 163705^2 .

It is a cyclic number.

It is not a de Polignac number, because 210101212002161 - 2²² = 210101207807857 is a prime.

It is not a weakly prime, because it can be changed into another prime (210101212007161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050606001080 + 105050606001081.

It is an arithmetic number, because the mean of its divisors is an integer number (105050606001081).

Almost surely, 2^{210101212002161} is an apocalyptic number.

It is an amenable number.

210101212002161 is a deficient number, since it is larger than the sum of its proper divisors (1).

210101212002161 is an equidigital number, since it uses as much as digits as its factorization.

210101212002161 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 20.

Adding to 210101212002161 its reverse (161200212101012), we get a palindrome (371301424103173).

The spelling of 210101212002161 in words is "two hundred ten trillion, one hundred one billion, two hundred twelve million, two thousand, one hundred sixty-one".