20001102011011 has 16 divisors (see below), whose sum is σ = 21839993452800. Its totient is φ = 18165652423200.

The previous prime is 20001102010991. The next prime is 20001102011063. The reversal of 20001102011011 is 11011020110002.

It is a cyclic number.

It is not a de Polignac number, because 20001102011011 - 2¹⁵ = 20001101978243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001102011411) 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, 58250250 + ... + 58592608.

It is an arithmetic number, because the mean of its divisors is an integer number (1364999590800).

Almost surely, 2^{20001102011011} is an apocalyptic number.

20001102011011 is a deficient number, since it is larger than the sum of its proper divisors (1838891441789).

20001102011011 is a wasteful number, since it uses less digits than its factorization.

20001102011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347370.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20001102011011 its reverse (11011020110002), we get a palindrome (31012122121013).

The spelling of 20001102011011 in words is "twenty trillion, one billion, one hundred two million, eleven thousand, eleven".