20020202021101 has 2 divisors, whose sum is σ = 20020202021102. Its totient is φ = 20020202021100.

The previous prime is 20020202021087. The next prime is 20020202021147. The reversal of 20020202021101 is 10112020202002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17119485504900 + 2900716516201 = 4137570^2 + 1703149^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020202021101 - 2²³ = 20020193632493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020202021401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010101010550 + 10010101010551.

It is an arithmetic number, because the mean of its divisors is an integer number (10010101010551).

Almost surely, 2^{20020202021101} is an apocalyptic number.

It is an amenable number.

20020202021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020202021101 is an equidigital number, since it uses as much as digits as its factorization.

20020202021101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20020202021101 its reverse (10112020202002), we get a palindrome (30132222223103).

The spelling of 20020202021101 in words is "twenty trillion, twenty billion, two hundred two million, twenty-one thousand, one hundred one".