201203121017 has 2 divisors, whose sum is σ = 201203121018. Its totient is φ = 201203121016.

The previous prime is 201203120999. The next prime is 201203121047. The reversal of 201203121017 is 710121302102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164106820201 + 37096300816 = 405101^2 + 192604^2 .

It is a cyclic number.

It is not a de Polignac number, because 201203121017 - 2²⁸ = 200934685561 is a prime.

It is a super-2 number, since 2×201203121017² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201203121017.

It is not a weakly prime, because it can be changed into another prime (201203121047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100601560508 + 100601560509.

It is an arithmetic number, because the mean of its divisors is an integer number (100601560509).

Almost surely, 2^201203121017 is an apocalyptic number.

It is an amenable number.

201203121017 is a deficient number, since it is larger than the sum of its proper divisors (1).

201203121017 is an equidigital number, since it uses as much as digits as its factorization.

201203121017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 201203121017 its reverse (710121302102), we get a palindrome (911324423119).

The spelling of 201203121017 in words is "two hundred one billion, two hundred three million, one hundred twenty-one thousand, seventeen".