20110001020011 has 80 divisors (see below), whose sum is σ = 34450240281600. Its totient is φ = 11452008899520.

The previous prime is 20110001019967. The next prime is 20110001020033. The reversal of 20110001020011 is 11002010001102.

It is a happy number.

It is not a de Polignac number, because 20110001020011 - 2³⁵ = 20075641281643 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 = 20110001019975 and 20110001020002.

It is not an unprimeable number, because it can be changed into a prime (20110001022011) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1093103865 + ... + 1093122261.

It is an arithmetic number, because the mean of its divisors is an integer number (430628003520).

Almost surely, 2^{20110001020011} is an apocalyptic number.

20110001020011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20110001020011 is a deficient number, since it is larger than the sum of its proper divisors (14340239261589).

20110001020011 is a wasteful number, since it uses less digits than its factorization.

20110001020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24926 (or 24917 counting only the distinct ones).

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

Adding to 20110001020011 its reverse (11002010001102), we get a palindrome (31112011021113).

The spelling of 20110001020011 in words is "twenty trillion, one hundred ten billion, one million, twenty thousand, eleven".