20010110011011 has 16 divisors (see below), whose sum is σ = 29703543045120. Its totient is φ = 13313552311080.

The previous prime is 20010110011009. The next prime is 20010110011037. The reversal of 20010110011011 is 11011001101002.

It is not a de Polignac number, because 20010110011011 - 2¹ = 20010110011009 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 = 20010110010984 and 20010110011002.

It is not an unprimeable number, because it can be changed into a prime (20010110011051) 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, 736681435 + ... + 736708596.

It is an arithmetic number, because the mean of its divisors is an integer number (1856471440320).

Almost surely, 2^{20010110011011} is an apocalyptic number.

20010110011011 is a deficient number, since it is larger than the sum of its proper divisors (9693433034109).

20010110011011 is a wasteful number, since it uses less digits than its factorization.

20010110011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473390543 (or 1473390537 counting only the distinct ones).

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

Adding to 20010110011011 its reverse (11011001101002), we get a palindrome (31021111112013).

The spelling of 20010110011011 in words is "twenty trillion, ten billion, one hundred ten million, eleven thousand, eleven".