20020211011 has 8 divisors (see below), whose sum is σ = 21097495584. Its totient is φ = 18960163200.

The previous prime is 20020211009. The next prime is 20020211021. The reversal of 20020211011 is 11011202002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20020211011 - 2¹ = 20020211009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020211021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4306806 + ... + 4311451.

It is an arithmetic number, because the mean of its divisors is an integer number (2637186948).

Almost surely, 2^20020211011 is an apocalyptic number.

20020211011 is a deficient number, since it is larger than the sum of its proper divisors (1077284573).

20020211011 is a wasteful number, since it uses less digits than its factorization.

20020211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8618381.

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

Adding to 20020211011 its reverse (11011202002), we get a palindrome (31031413013).

Subtracting from 20020211011 its reverse (11011202002), we obtain a palindrome (9009009009).

The spelling of 20020211011 in words is "twenty billion, twenty million, two hundred eleven thousand, eleven".