20020101110209 has 4 divisors (see below), whose sum is σ = 20020114443604. Its totient is φ = 20020087776816.

The previous prime is 20020101110201. The next prime is 20020101110239. The reversal of 20020101110209 is 90201110102002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8364213489025 + 11655887621184 = 2892095^2 + 3414072^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020101110209 - 2³ = 20020101110201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020101110201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079862 + ... + 7528975.

It is an arithmetic number, because the mean of its divisors is an integer number (5005028610901).

Almost surely, 2^{20020101110209} is an apocalyptic number.

It is an amenable number.

20020101110209 is a deficient number, since it is larger than the sum of its proper divisors (13333395).

20020101110209 is a wasteful number, since it uses less digits than its factorization.

20020101110209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13333394.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 20020101110209 in words is "twenty trillion, twenty billion, one hundred one million, one hundred ten thousand, two hundred nine".