20010011011 has 16 divisors (see below), whose sum is σ = 20658931200. Its totient is φ = 19372046400.

The previous prime is 20010010961. The next prime is 20010011059. The reversal of 20010011011 is 11011001002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010011011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010010985 and 20010011003.

It is not an unprimeable number, because it can be changed into a prime (20010011111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4727266 + ... + 4731496.

It is an arithmetic number, because the mean of its divisors is an integer number (1291183200).

Almost surely, 2^20010011011 is an apocalyptic number.

20010011011 is a deficient number, since it is larger than the sum of its proper divisors (648920189).

20010011011 is a wasteful number, since it uses less digits than its factorization.

20010011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 20010011011 its reverse (11011001002), we get a palindrome (31021012013).

The spelling of 20010011011 in words is "twenty billion, ten million, eleven thousand, eleven".