20020100011011 has 10 divisors (see below), whose sum is σ = 29906569152372. Its totient is φ = 13346733340620.

The previous prime is 20020100010917. The next prime is 20020100011013. The reversal of 20020100011011 is 11011000102002.

It is a happy number.

It is not a de Polignac number, because 20020100011011 - 2³⁸ = 19745222104067 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 = 20020100010984 and 20020100011002.

It is not an unprimeable number, because it can be changed into a prime (20020100011013) 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 9 ways as a sum of consecutive naturals, for example, 123580864185 + ... + 123580864346.

Almost surely, 2^{20020100011011} is an apocalyptic number.

20020100011011 is a deficient number, since it is larger than the sum of its proper divisors (9886469141361).

20020100011011 is an equidigital number, since it uses as much as digits as its factorization.

20020100011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247161728543 (or 247161728534 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20020100011011 its reverse (11011000102002), we get a palindrome (31031100113013).

Subtracting from 20020100011011 its reverse (11011000102002), we obtain a palindrome (9009099909009).

The spelling of 20020100011011 in words is "twenty trillion, twenty billion, one hundred million, eleven thousand, eleven".