20001111010011 has 6 divisors (see below), whose sum is σ = 28890493681140. Its totient is φ = 13334074006668.

The previous prime is 20001111010009. The next prime is 20001111010019. The reversal of 20001111010011 is 11001011110002.

It is not a de Polignac number, because 20001111010011 - 2¹ = 20001111010009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2222345667779 = 20001111010011 / (2 + 0 + 0 + 0 + 1 + 1 + 1 + 1 + 0 + 1 + 0 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 20001111009975 and 20001111010002.

It is not an unprimeable number, because it can be changed into a prime (20001111010019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111172833881 + ... + 1111172833898.

It is an arithmetic number, because the mean of its divisors is an integer number (4815082280190).

Almost surely, 2^{20001111010011} is an apocalyptic number.

20001111010011 is a deficient number, since it is larger than the sum of its proper divisors (8889382671129).

20001111010011 is a wasteful number, since it uses less digits than its factorization.

20001111010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222345667785 (or 2222345667782 counting only the distinct ones).

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

Adding to 20001111010011 its reverse (11001011110002), we get a palindrome (31002122120013).

Subtracting from 20001111010011 its reverse (11001011110002), we obtain a palindrome (9000099900009).

The spelling of 20001111010011 in words is "twenty trillion, one billion, one hundred eleven million, ten thousand, eleven".