20102001011011 has 16 divisors (see below), whose sum is σ = 21212114587200. Its totient is φ = 19011572287488.

The previous prime is 20102001011003. The next prime is 20102001011017. The reversal of 20102001011011 is 11011010020102.

It is not a de Polignac number, because 20102001011011 - 2³ = 20102001011003 is a prime.

It is a super-2 number, since 2×20102001011011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102001011017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200590705 + ... + 200690893.

It is an arithmetic number, because the mean of its divisors is an integer number (1325757161700).

Almost surely, 2^{20102001011011} is an apocalyptic number.

20102001011011 is a deficient number, since it is larger than the sum of its proper divisors (1110113576189).

20102001011011 is a wasteful number, since it uses less digits than its factorization.

20102001011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198318.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20102001011011 its reverse (11011010020102), we get a palindrome (31113011031113).

Subtracting from 20102001011011 its reverse (11011010020102), we obtain a palindrome (9090990990909).

The spelling of 20102001011011 in words is "twenty trillion, one hundred two billion, one million, eleven thousand, eleven".