20100001011 has 16 divisors (see below), whose sum is σ = 27313698720. Its totient is φ = 13145587200.

The previous prime is 20100000971. The next prime is 20100001013. The reversal of 20100001011 is 11010000102.

It is not a de Polignac number, because 20100001011 - 2⁹ = 20100000499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20100001013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271270 + ... + 337323.

It is an arithmetic number, because the mean of its divisors is an integer number (1707106170).

Almost surely, 2^20100001011 is an apocalyptic number.

20100001011 is a deficient number, since it is larger than the sum of its proper divisors (7213697709).

20100001011 is a wasteful number, since it uses less digits than its factorization.

20100001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608806.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20100001011 its reverse (11010000102), we get a palindrome (31110001113).

Subtracting from 20100001011 its reverse (11010000102), we obtain a palindrome (9090000909).

It can be divided in two parts, 2010000101 and 1, that added together give a palindrome (2010000102).

The spelling of 20100001011 in words is "twenty billion, one hundred million, one thousand, eleven".