101212222110161 has 2 divisors, whose sum is σ = 101212222110162. Its totient is φ = 101212222110160.

The previous prime is 101212222110101. The next prime is 101212222110179. The reversal of 101212222110161 is 161011222212101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54805608292561 + 46406613817600 = 7403081^2 + 6812240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212222110161 is a prime.

It is not a weakly prime, because it can be changed into another prime (101212222110101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606111055080 + 50606111055081.

It is an arithmetic number, because the mean of its divisors is an integer number (50606111055081).

Almost surely, 2^{101212222110161} is an apocalyptic number.

It is an amenable number.

101212222110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212222110161 is an equidigital number, since it uses as much as digits as its factorization.

101212222110161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 101212222110161 its reverse (161011222212101), we get a palindrome (262223444322262).

The spelling of 101212222110161 in words is "one hundred one trillion, two hundred twelve billion, two hundred twenty-two million, one hundred ten thousand, one hundred sixty-one".