20020000011 has 16 divisors (see below), whose sum is σ = 29165038848. Its totient is φ = 12114567200.

The previous prime is 20019999991. The next prime is 20020000073. The reversal of 20020000011 is 11000002002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20020000011 - 2⁹ = 20019999499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020000111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447480 + ... + 490181.

It is an arithmetic number, because the mean of its divisors is an integer number (1822814928).

Almost surely, 2^20020000011 is an apocalyptic number.

20020000011 is a deficient number, since it is larger than the sum of its proper divisors (9145038837).

20020000011 is a wasteful number, since it uses less digits than its factorization.

20020000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938322.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20020000011 its reverse (11000002002), we get a palindrome (31020002013).

The spelling of 20020000011 in words is "twenty billion, twenty million, eleven", and thus it is an aban number and an uban number.