101212011161 has 2 divisors, whose sum is σ = 101212011162. Its totient is φ = 101212011160.

The previous prime is 101212011139. The next prime is 101212011169. The reversal of 101212011161 is 161110212101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100516897936 + 695113225 = 317044^2 + 26365^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212011161 - 2¹⁴ = 101211994777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (101212011169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606005580 + 50606005581.

It is an arithmetic number, because the mean of its divisors is an integer number (50606005581).

Almost surely, 2^101212011161 is an apocalyptic number.

It is an amenable number.

101212011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212011161 is an equidigital number, since it uses as much as digits as its factorization.

101212011161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 101212011161 its reverse (161110212101), we get a palindrome (262322223262).

The spelling of 101212011161 in words is "one hundred one billion, two hundred twelve million, eleven thousand, one hundred sixty-one".