20201012020111 has 16 divisors (see below), whose sum is σ = 21885749331264. Its totient is φ = 18534967881984.

The previous prime is 20201012020099. The next prime is 20201012020139. The reversal of 20201012020111 is 11102021010202.

It is a cyclic number.

It is not a de Polignac number, because 20201012020111 - 2²³ = 20201003631503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20201012020091 and 20201012020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201012027111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112404921 + ... + 112584493.

It is an arithmetic number, because the mean of its divisors is an integer number (1367859333204).

Almost surely, 2^{20201012020111} is an apocalyptic number.

20201012020111 is a deficient number, since it is larger than the sum of its proper divisors (1684737311153).

20201012020111 is a wasteful number, since it uses less digits than its factorization.

20201012020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231570.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20201012020111 its reverse (11102021010202), we get a palindrome (31303033030313).

The spelling of 20201012020111 in words is "twenty trillion, two hundred one billion, twelve million, twenty thousand, one hundred eleven".