202020011101 has 2 divisors, whose sum is σ = 202020011102. Its totient is φ = 202020011100.

The previous prime is 202020011087. The next prime is 202020011113. The reversal of 202020011101 is 101110020202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190314935001 + 11705076100 = 436251^2 + 108190^2 .

It is a cyclic number.

It is not a de Polignac number, because 202020011101 - 2¹³ = 202020002909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202020011131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010005550 + 101010005551.

It is an arithmetic number, because the mean of its divisors is an integer number (101010005551).

Almost surely, 2^202020011101 is an apocalyptic number.

It is an amenable number.

202020011101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020011101 is an equidigital number, since it uses as much as digits as its factorization.

202020011101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 202020011101 its reverse (101110020202), we get a palindrome (303130031303).

The spelling of 202020011101 in words is "two hundred two billion, twenty million, eleven thousand, one hundred one".