20010111010011 has 40 divisors (see below), whose sum is σ = 31491269391120. Its totient is φ = 12627370257408.

The previous prime is 20010111009949. The next prime is 20010111010039. The reversal of 20010111010011 is 11001011101002.

It is not a de Polignac number, because 20010111010011 - 2¹¹ = 20010111007963 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 = 20010111009975 and 20010111010002.

It is not an unprimeable number, because it can be changed into a prime (20010111014011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3613270 + ... + 7285323.

It is an arithmetic number, because the mean of its divisors is an integer number (787281734778).

Almost surely, 2^{20010111010011} is an apocalyptic number.

20010111010011 is a deficient number, since it is larger than the sum of its proper divisors (11481158381109).

20010111010011 is a wasteful number, since it uses less digits than its factorization.

20010111010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10899817 (or 10899808 counting only the distinct ones).

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

Adding to 20010111010011 its reverse (11001011101002), we get a palindrome (31011122111013).

Subtracting from 20010111010011 its reverse (11001011101002), we obtain a palindrome (9009099909009).

It can be divided in two parts, 2001011101001 and 1, that added together give a palindrome (2001011101002).

The spelling of 20010111010011 in words is "twenty trillion, ten billion, one hundred eleven million, ten thousand, eleven".