20002122111011 has 4 divisors (see below), whose sum is σ = 20038032564192. Its totient is φ = 19966211657832.

The previous prime is 20002122110953. The next prime is 20002122111073. The reversal of 20002122111011 is 11011122120002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002122111011 - 2¹⁰ = 20002122109987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002122111511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17955225755 + ... + 17955226868.

It is an arithmetic number, because the mean of its divisors is an integer number (5009508141048).

Almost surely, 2^{20002122111011} is an apocalyptic number.

20002122111011 is a deficient number, since it is larger than the sum of its proper divisors (35910453181).

20002122111011 is an equidigital number, since it uses as much as digits as its factorization.

20002122111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35910453180.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20002122111011 its reverse (11011122120002), we get a palindrome (31013244231013).

The spelling of 20002122111011 in words is "twenty trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, eleven".