20001011101011 has 24 divisors (see below), whose sum is σ = 29364808824000. Its totient is φ = 13116281023872.

The previous prime is 20001011100997. The next prime is 20001011101069. The reversal of 20001011101011 is 11010111010002.

It is not a de Polignac number, because 20001011101011 - 2¹⁰ = 20001011099987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001011100984 and 20001011101002.

It is not an unprimeable number, because it can be changed into a prime (20001011101411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52096506 + ... + 52479023.

It is an arithmetic number, because the mean of its divisors is an integer number (1223533701000).

Almost surely, 2^{20001011101011} is an apocalyptic number.

20001011101011 is a deficient number, since it is larger than the sum of its proper divisors (9363797722989).

20001011101011 is a wasteful number, since it uses less digits than its factorization.

20001011101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104575883 (or 104575880 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 20001011101011 its reverse (11010111010002), we get a palindrome (31011122111013).

The spelling of 20001011101011 in words is "twenty trillion, one billion, eleven million, one hundred one thousand, eleven".