201020332061 has 2 divisors, whose sum is σ = 201020332062. Its totient is φ = 201020332060.

The previous prime is 201020332003. The next prime is 201020332091. The reversal of 201020332061 is 160233020102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195557643961 + 5462688100 = 442219^2 + 73910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020332061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201020332091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510166030 + 100510166031.

It is an arithmetic number, because the mean of its divisors is an integer number (100510166031).

Almost surely, 2^201020332061 is an apocalyptic number.

It is an amenable number.

201020332061 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020332061 is an equidigital number, since it uses as much as digits as its factorization.

201020332061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 201020332061 its reverse (160233020102), we get a palindrome (361253352163).

The spelling of 201020332061 in words is "two hundred one billion, twenty million, three hundred thirty-two thousand, sixty-one".