101010212161 has 2 divisors, whose sum is σ = 101010212162. Its totient is φ = 101010212160.

The previous prime is 101010212141. The next prime is 101010212227. The reversal of 101010212161 is 161212010101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98568369936 + 2441842225 = 313956^2 + 49415^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010212161 - 2²⁵ = 100976657729 is a prime.

It is not a weakly prime, because it can be changed into another prime (101010212101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505106080 + 50505106081.

It is an arithmetic number, because the mean of its divisors is an integer number (50505106081).

Almost surely, 2^101010212161 is an apocalyptic number.

It is an amenable number.

101010212161 is a deficient number, since it is larger than the sum of its proper divisors (1).

101010212161 is an equidigital number, since it uses as much as digits as its factorization.

101010212161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 101010212161 its reverse (161212010101), we get a palindrome (262222222262).

The spelling of 101010212161 in words is "one hundred one billion, ten million, two hundred twelve thousand, one hundred sixty-one".