201020220101 has 2 divisors, whose sum is σ = 201020220102. Its totient is φ = 201020220100.

The previous prime is 201020220053. The next prime is 201020220143. The reversal of 201020220101 is 101022020102.

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., 177471783076 + 23548437025 = 421274^2 + 153455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020220101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201020222101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510110050 + 100510110051.

It is an arithmetic number, because the mean of its divisors is an integer number (100510110051).

Almost surely, 2^201020220101 is an apocalyptic number.

It is an amenable number.

201020220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020220101 is an equidigital number, since it uses as much as digits as its factorization.

201020220101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201020220101 its reverse (101022020102), we get a palindrome (302042240203).

The spelling of 201020220101 in words is "two hundred one billion, twenty million, two hundred twenty thousand, one hundred one".