1010203112161 has 2 divisors, whose sum is σ = 1010203112162. Its totient is φ = 1010203112160.

The previous prime is 1010203112147. The next prime is 1010203112221. The reversal of 1010203112161 is 1612113020101.

1010203112161 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., 667070761536 + 343132350625 = 816744^2 + 585775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010203112161 - 2¹³ = 1010203103969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010203115161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505101556080 + 505101556081.

It is an arithmetic number, because the mean of its divisors is an integer number (505101556081).

Almost surely, 2^{1010203112161} is an apocalyptic number.

It is an amenable number.

1010203112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010203112161 is an equidigital number, since it uses as much as digits as its factorization.

1010203112161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1010203112161 its reverse (1612113020101), we get a palindrome (2622316132262).

The spelling of 1010203112161 in words is "one trillion, ten billion, two hundred three million, one hundred twelve thousand, one hundred sixty-one".