20010200120111 has 4 divisors (see below), whose sum is σ = 20010543931224. Its totient is φ = 20009856309000.

The previous prime is 20010200120093. The next prime is 20010200120191. The reversal of 20010200120111 is 11102100201002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010200120111 - 2²⁶ = 20010133011247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010200120092 and 20010200120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010200120191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171818240 + ... + 171934661.

It is an arithmetic number, because the mean of its divisors is an integer number (5002635982806).

Almost surely, 2^{20010200120111} is an apocalyptic number.

20010200120111 is a deficient number, since it is larger than the sum of its proper divisors (343811113).

20010200120111 is an equidigital number, since it uses as much as digits as its factorization.

20010200120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343811112.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20010200120111 its reverse (11102100201002), we get a palindrome (31112300321113).

The spelling of 20010200120111 in words is "twenty trillion, ten billion, two hundred million, one hundred twenty thousand, one hundred eleven".