20018200101011 has 24 divisors (see below), whose sum is σ = 23339330806176. Its totient is φ = 17119520315520.

The previous prime is 20018200100993. The next prime is 20018200101023. The reversal of 20018200101011 is 11010100281002.

It is not a de Polignac number, because 20018200101011 - 2²² = 20018195906707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20018200100011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258537575 + ... + 258614991.

It is an arithmetic number, because the mean of its divisors is an integer number (972472116924).

Almost surely, 2^{20018200101011} is an apocalyptic number.

20018200101011 is a deficient number, since it is larger than the sum of its proper divisors (3321130705165).

20018200101011 is a wasteful number, since it uses less digits than its factorization.

20018200101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89339 (or 89332 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20018200101011 its reverse (11010100281002), we get a palindrome (31028300382013).

The spelling of 20018200101011 in words is "twenty trillion, eighteen billion, two hundred million, one hundred one thousand, eleven".